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7984e5f7 | 1 | // |
2 | // Utilities used in the forward multiplcity analysis | |
3 | // | |
4 | // | |
5 | #ifndef ALIFORWARDUTIL_H | |
6 | #define ALIFORWARDUTIL_H | |
ffca499d | 7 | /** |
8 | * @file AliForwardUtil.h | |
9 | * @author Christian Holm Christensen <cholm@dalsgaard.hehi.nbi.dk> | |
10 | * @date Wed Mar 23 14:06:54 2011 | |
11 | * | |
12 | * @brief | |
13 | * | |
14 | * | |
bd6f5206 | 15 | * @ingroup pwglf_forward |
ffca499d | 16 | */ |
7e4038b5 | 17 | #include <TObject.h> |
9d99b0dd | 18 | #include <TString.h> |
7f759bb7 | 19 | #include <TObjArray.h> |
7e4038b5 | 20 | class TH2D; |
9d99b0dd | 21 | class TH1I; |
22 | class TH1; | |
7f759bb7 | 23 | class TF1; |
7e4038b5 | 24 | class TAxis; |
9d99b0dd | 25 | class AliESDEvent; |
290052e7 | 26 | class AliAODEvent; |
27 | class AliAnalysisTaskSE; | |
7e4038b5 | 28 | |
29 | /** | |
30 | * Utilities used in the forward multiplcity analysis | |
31 | * | |
bd6f5206 | 32 | * @ingroup pwglf_forward |
7e4038b5 | 33 | */ |
34 | class AliForwardUtil : public TObject | |
35 | { | |
9d99b0dd | 36 | public: |
ffca499d | 37 | /** |
38 | * Get the standard color for a ring | |
39 | * | |
40 | * @param d Detector | |
41 | * @param r Ring | |
42 | * | |
43 | * @return | |
44 | */ | |
cc83fca2 | 45 | static Color_t RingColor(UShort_t d, Char_t r) |
46 | { | |
47 | return ((d == 1 ? kRed : (d == 2 ? kGreen : kBlue)) | |
5bb5d1f6 | 48 | + ((r == 'I' || r == 'i') ? 2 : -3)); |
cc83fca2 | 49 | } |
0bd4b00f | 50 | //================================================================== |
51 | /** | |
52 | * @{ | |
7c1a1f1d | 53 | * @name Collision/run parameters |
0bd4b00f | 54 | */ |
55 | /** | |
56 | * Defined collision types | |
57 | */ | |
58 | enum ECollisionSystem { | |
59 | kUnknown, | |
60 | kPP, | |
0151a6c6 | 61 | kPbPb, |
62 | kPPb | |
0bd4b00f | 63 | }; |
64 | //__________________________________________________________________ | |
38229ecd | 65 | /** |
66 | * Calculate the beam rapidity. | |
67 | * | |
68 | * @b Note: The beam energy is given in GeV/charge | |
69 | * | |
70 | * @param beam Beam energy in GeV/charge | |
71 | * @param z Charge number of projectile | |
72 | * @param a Mass number of projectile | |
73 | * | |
74 | * @return The rapidity of the beam | |
75 | */ | |
76 | static Float_t BeamRapidity(Float_t beam, UShort_t z, UShort_t a); | |
77 | /** | |
78 | * Calculate the center of mass energy from the beam energy per | |
79 | * charge and the nucleus numbers. | |
80 | * | |
81 | * @param beam Beam energy in GeV/charge | |
82 | * @param z1 Charge number of projectile | |
83 | * @param a1 Mass number of projectile | |
84 | * @param z2 Charge number of projectile | |
85 | * @param a2 Mass number of projectile | |
86 | * | |
87 | * @return The center of mass energy in GeV/nucleon | |
88 | */ | |
89 | static Float_t CenterOfMassEnergy(Float_t beam, UShort_t z1, UShort_t a1, | |
90 | Short_t z2=-1, Short_t a2=-1); | |
91 | /** | |
92 | * Calculate the center of mass rapidity (shift) | |
93 | * | |
94 | * @param z1 Charge number of projectile | |
95 | * @param a1 Mass number of projectile | |
96 | * @param z2 Charge number of projectile | |
97 | * @param a2 Mass number of projectile | |
98 | * x | |
99 | * @return Rapidity of the center of mass | |
100 | */ | |
101 | static Float_t CenterOfMassRapidity(UShort_t z1, UShort_t a1, | |
102 | Short_t z2=-1, Short_t a2=-1); | |
0bd4b00f | 103 | /** |
104 | * Parse a collision system spec given in a string. Known values are | |
105 | * | |
106 | * - "pp", "p-p" which returns kPP | |
0151a6c6 | 107 | * - "PbPb", "Pb-Pb", "A-A", which returns kPbPb |
108 | * - "pPb", "p-Pb", "pA", p-A" which returns kPPb | |
0bd4b00f | 109 | * - Everything else gives kUnknown |
110 | * | |
111 | * @param sys Collision system spec | |
112 | * | |
113 | * @return Collision system id | |
114 | */ | |
115 | static UShort_t ParseCollisionSystem(const char* sys); | |
116 | /** | |
117 | * Get a string representation of the collision system | |
118 | * | |
119 | * @param sys Collision system | |
120 | * - kPP -> "pp" | |
121 | * - kPbPb -> "PbPb" | |
0151a6c6 | 122 | * - kPPb -> "pPb" |
0bd4b00f | 123 | * - anything else gives "unknown" |
124 | * | |
125 | * @return String representation of the collision system | |
126 | */ | |
127 | static const char* CollisionSystemString(UShort_t sys); | |
128 | //__________________________________________________________________ | |
129 | /** | |
130 | * Parse the center of mass energy given as a float and return known | |
131 | * values as a unsigned integer | |
132 | * | |
133 | * @param sys Collision system (needed for AA) | |
134 | * @param cms Center of mass energy * total charge | |
135 | * | |
136 | * @return Center of mass energy per nucleon | |
137 | */ | |
138 | static UShort_t ParseCenterOfMassEnergy(UShort_t sys, Float_t cms); | |
139 | /** | |
140 | * Get a string representation of the center of mass energy per nuclean | |
141 | * | |
7c1a1f1d | 142 | * @param cms Center of mass energy per nucleon |
0bd4b00f | 143 | * |
144 | * @return String representation of the center of mass energy per nuclean | |
145 | */ | |
146 | static const char* CenterOfMassEnergyString(UShort_t cms); | |
147 | //__________________________________________________________________ | |
148 | /** | |
149 | * Parse the magnetic field (in kG) as given by a floating point number | |
150 | * | |
151 | * @param field Magnetic field in kG | |
152 | * | |
153 | * @return Short integer value of magnetic field in kG | |
154 | */ | |
155 | static Short_t ParseMagneticField(Float_t field); | |
5ca83fee | 156 | /** |
157 | * Get the radius of a strip. | |
158 | * | |
159 | * @param ring Ring identifier 'I' or 'O' | |
160 | * @param strip Strip number | |
161 | * | |
162 | * @return Radial distance from beam of the strip | |
163 | */ | |
164 | static Double_t GetStripR(Char_t ring, UShort_t strip); | |
6f4a5c0d | 165 | /** |
166 | * Get eta from strip | |
167 | * | |
168 | * @param det, ring, sec, strip, zvtx | |
169 | * | |
170 | * @return eta | |
171 | */ | |
5ca83fee | 172 | static Double_t GetEtaFromStrip(UShort_t det, Char_t ring, |
173 | UShort_t sec, UShort_t strip, Double_t zvtx); | |
174 | /** | |
175 | * Get the azimuthal angle of a strip | |
176 | * | |
177 | * @param ring Ring identifier 'I' or 'O' | |
178 | * @param strip Strip number | |
179 | * @param phi Straight forward strip phi | |
180 | * @param xvtx Ip X coordinate | |
181 | * @param yvtx Ip Y coordinate | |
182 | * | |
183 | * @return The phi angle correctef for (X,Y) off set. | |
184 | */ | |
185 | static Double_t GetPhiFromStrip(Char_t ring, UShort_t strip, | |
186 | Double_t phi, Double_t xvtx, Double_t yvtx); | |
0bd4b00f | 187 | /** |
188 | * Get a string representation of the magnetic field | |
189 | * | |
190 | * @param field Magnetic field in kG | |
191 | * | |
192 | * @return String representation of the magnetic field | |
193 | */ | |
6f4a5c0d | 194 | static const char* MagneticFieldString(Short_t field); |
0bd4b00f | 195 | /* @} */ |
196 | ||
290052e7 | 197 | //__________________________________________________________________ |
198 | /** | |
199 | * Get the AOD event - either from the input (AOD analysis) or the | |
200 | * output (ESD analysis) | |
201 | * | |
202 | * @param task Task to do the investigation for | |
203 | * | |
204 | * @return Found AOD event or null | |
205 | */ | |
206 | static AliAODEvent* GetAODEvent(AliAnalysisTaskSE* task); | |
207 | /** | |
208 | * Check if we have something that will provide and AOD event | |
209 | * | |
210 | * @return 0 if there's nothing that provide an AOD event, 1 if it | |
211 | * is provided on the input (AOD analysis) or 2 if it is provided on | |
212 | * the output (ESD analysis) | |
213 | */ | |
214 | static UShort_t CheckForAOD(); | |
215 | /** | |
216 | * Check if we have a particular (kind) of task in our train | |
217 | * | |
218 | * @param clsOrName Class name or name of task | |
219 | * @param cls If true, look for a task of a particular class - | |
220 | * otherwise search for a speficially name task | |
221 | * | |
222 | * @return true if the needed task was found | |
223 | */ | |
224 | static Bool_t CheckForTask(const char* clsOrName, Bool_t cls=true); | |
225 | ||
241cca4d | 226 | //__________________________________________________________________ |
227 | /** | |
228 | * @{ | |
229 | * @name Member functions to store and retrieve analysis parameters | |
230 | */ | |
231 | static TObject* MakeParameter(const char* name, UShort_t value); | |
232 | static TObject* MakeParameter(const char* name, Int_t value); | |
233 | static TObject* MakeParameter(const char* name, Double_t value); | |
234 | static TObject* MakeParameter(const char* name, Bool_t value); | |
235 | static void GetParameter(TObject* o, UShort_t& value); | |
236 | static void GetParameter(TObject* o, Int_t& value); | |
237 | static void GetParameter(TObject* o, Double_t& value); | |
238 | static void GetParameter(TObject* o, Bool_t& value); | |
239 | /* @} */ | |
240 | ||
0bd4b00f | 241 | /** |
242 | * @{ | |
243 | * @name Energy stragling functions | |
244 | */ | |
7f759bb7 | 245 | //__________________________________________________________________ |
246 | /** | |
247 | * Number of steps to do in the Landau, Gaussiam convolution | |
248 | */ | |
fb3430ac | 249 | static Int_t fgConvolutionSteps; // Number of convolution steps |
7f759bb7 | 250 | //------------------------------------------------------------------ |
251 | /** | |
252 | * How many sigma's of the Gaussian in the Landau, Gaussian | |
253 | * convolution to integrate over | |
254 | */ | |
fb3430ac | 255 | static Double_t fgConvolutionNSigma; // Number of convolution sigmas |
7f759bb7 | 256 | //------------------------------------------------------------------ |
257 | /** | |
258 | * Calculate the shifted Landau | |
259 | * @f[ | |
260 | * f'_{L}(x;\Delta,\xi) = f_L(x;\Delta+0.22278298\xi) | |
261 | * @f] | |
262 | * | |
263 | * where @f$ f_{L}@f$ is the ROOT implementation of the Landau | |
264 | * distribution (known to have @f$ \Delta_{p}=-0.22278298@f$ for | |
265 | * @f$\Delta=0,\xi=1@f$. | |
266 | * | |
267 | * @param x Where to evaluate @f$ f'_{L}@f$ | |
268 | * @param delta Most probable value | |
269 | * @param xi The 'width' of the distribution | |
270 | * | |
c389303e | 271 | * @return @f$ f'_{L}(x;\Delta,\xi) @f$ |
7f759bb7 | 272 | */ |
273 | static Double_t Landau(Double_t x, Double_t delta, Double_t xi); | |
274 | ||
275 | //------------------------------------------------------------------ | |
9d99b0dd | 276 | /** |
7f759bb7 | 277 | * Calculate the value of a Landau convolved with a Gaussian |
9d99b0dd | 278 | * |
7f759bb7 | 279 | * @f[ |
c389303e | 280 | * f(x;\Delta,\xi,\sigma') = \frac{1}{\sigma' \sqrt{2 \pi}} |
7f759bb7 | 281 | * \int_{-\infty}^{+\infty} d\Delta' f'_{L}(x;\Delta',\xi) |
c389303e | 282 | * \exp{-\frac{(\Delta-\Delta')^2}{2\sigma'^2}} |
7f759bb7 | 283 | * @f] |
9d99b0dd | 284 | * |
c389303e | 285 | * where @f$ f'_{L}@f$ is the Landau distribution, @f$ \Delta@f$ the |
286 | * energy loss, @f$ \xi@f$ the width of the Landau, and | |
287 | * @f$ \sigma'^2=\sigma^2-\sigma_n^2 @f$. Here, @f$\sigma@f$ is the | |
7f759bb7 | 288 | * variance of the Gaussian, and @f$\sigma_n@f$ is a parameter modelling |
289 | * noise in the detector. | |
290 | * | |
291 | * Note that this function uses the constants fgConvolutionSteps and | |
292 | * fgConvolutionNSigma | |
293 | * | |
294 | * References: | |
295 | * - <a href="http://dx.doi.org/10.1016/0168-583X(84)90472-5">Nucl.Instrum.Meth.B1:16</a> | |
296 | * - <a href="http://dx.doi.org/10.1103/PhysRevA.28.615">Phys.Rev.A28:615</a> | |
297 | * - <a href="http://root.cern.ch/root/htmldoc/tutorials/fit/langaus.C.html">ROOT implementation</a> | |
298 | * | |
299 | * @param x where to evaluate @f$ f@f$ | |
300 | * @param delta @f$ \Delta@f$ of @f$ f(x;\Delta,\xi,\sigma')@f$ | |
301 | * @param xi @f$ \xi@f$ of @f$ f(x;\Delta,\xi,\sigma')@f$ | |
c389303e | 302 | * @param sigma @f$ \sigma@f$ of @f$\sigma'^2=\sigma^2-\sigma_n^2 @f$ |
303 | * @param sigma_n @f$ \sigma_n@f$ of @f$\sigma'^2=\sigma^2-\sigma_n^2 @f$ | |
7f759bb7 | 304 | * |
305 | * @return @f$ f@f$ evaluated at @f$ x@f$. | |
9d99b0dd | 306 | */ |
7f759bb7 | 307 | static Double_t LandauGaus(Double_t x, Double_t delta, Double_t xi, |
308 | Double_t sigma, Double_t sigma_n); | |
0bd4b00f | 309 | |
310 | //------------------------------------------------------------------ | |
311 | /** | |
312 | * Evaluate | |
313 | * @f[ | |
314 | * f_i(x;\Delta,\xi,\sigma') = f(x;\Delta_i,\xi_i,\sigma_i') | |
315 | * @f] | |
316 | * corresponding to @f$ i@f$ particles i.e., with the substitutions | |
7c1a1f1d | 317 | * @f{eqnarray*}{ |
318 | * \Delta \rightarrow \Delta_i &=& i(\Delta + \xi\log(i))\\ | |
319 | * \xi \rightarrow \xi_i &=& i \xi\\ | |
320 | * \sigma \rightarrow \sigma_i &=& \sqrt{i}\sigma\\ | |
321 | * \sigma'^2 \rightarrow \sigma_i'^2 &=& \sigma_n^2 + \sigma_i^2 | |
322 | * @f} | |
0bd4b00f | 323 | * |
324 | * @param x Where to evaluate | |
325 | * @param delta @f$ \Delta@f$ | |
326 | * @param xi @f$ \xi@f$ | |
327 | * @param sigma @f$ \sigma@f$ | |
328 | * @param sigma_n @f$ \sigma_n@f$ | |
7c1a1f1d | 329 | * @param i @f$ i @f$ |
0bd4b00f | 330 | * |
7c1a1f1d | 331 | * @return @f$ f_i @f$ evaluated |
0bd4b00f | 332 | */ |
333 | static Double_t ILandauGaus(Double_t x, Double_t delta, Double_t xi, | |
334 | Double_t sigma, Double_t sigma_n, Int_t i); | |
335 | ||
336 | //------------------------------------------------------------------ | |
337 | /** | |
338 | * Numerically evaluate | |
339 | * @f[ | |
340 | * \left.\frac{\partial f_i}{\partial p_i}\right|_{x} | |
341 | * @f] | |
342 | * where @f$ p_i@f$ is the @f$ i^{\mbox{th}}@f$ parameter. The mapping | |
343 | * of the parameters is given by | |
344 | * | |
345 | * - 0: @f$\Delta@f$ | |
346 | * - 1: @f$\xi@f$ | |
347 | * - 2: @f$\sigma@f$ | |
348 | * - 3: @f$\sigma_n@f$ | |
349 | * | |
350 | * This is the partial derivative with respect to the parameter of | |
351 | * the response function corresponding to @f$ i@f$ particles i.e., | |
352 | * with the substitutions | |
353 | * @f[ | |
354 | * \Delta \rightarrow \Delta_i = i(\Delta + \xi\log(i))\\ | |
355 | * \xi \rightarrow \xi_i = i \xi\\ | |
356 | * \sigma \rightarrow \sigma_i = \sqrt{i}\sigma\\ | |
357 | * \sigma'^2 \rightarrow \sigma_i'^2 = \sigma_n^2 + \sigma_i^2 | |
358 | * @f] | |
359 | * | |
360 | * @param x Where to evaluate | |
361 | * @param ipar Parameter number | |
7c1a1f1d | 362 | * @param dp @f$ \epsilon\delta p_i@f$ for some value of @f$\epsilon@f$ |
0bd4b00f | 363 | * @param delta @f$ \Delta@f$ |
364 | * @param xi @f$ \xi@f$ | |
365 | * @param sigma @f$ \sigma@f$ | |
366 | * @param sigma_n @f$ \sigma_n@f$ | |
367 | * @param i @f$ i@f$ | |
368 | * | |
369 | * @return @f$ f_i@f$ evaluated | |
370 | */ | |
371 | static Double_t IdLandauGausdPar(Double_t x, UShort_t ipar, Double_t dp, | |
372 | Double_t delta, Double_t xi, | |
373 | Double_t sigma, Double_t sigma_n, Int_t i); | |
374 | ||
7f759bb7 | 375 | //------------------------------------------------------------------ |
9d99b0dd | 376 | /** |
7f759bb7 | 377 | * Evaluate |
c389303e | 378 | * @f[ |
0bd4b00f | 379 | * f_N(x;\Delta,\xi,\sigma') = \sum_{i=1}^N a_i f_i(x;\Delta,\xi,\sigma'a) |
380 | * @f] | |
9d99b0dd | 381 | * |
7f759bb7 | 382 | * where @f$ f(x;\Delta,\xi,\sigma')@f$ is the convolution of a |
383 | * Landau with a Gaussian (see LandauGaus). Note that | |
c389303e | 384 | * @f$ a_1 = 1@f$, @f$\Delta_i = i(\Delta_1 + \xi\log(i))@f$, |
385 | * @f$\xi_i=i\xi_1@f$, and @f$\sigma_i'^2 = \sigma_n^2 + i\sigma_1^2@f$. | |
7f759bb7 | 386 | * |
387 | * References: | |
388 | * - <a href="http://dx.doi.org/10.1016/0168-583X(84)90472-5">Nucl.Instrum.Meth.B1:16</a> | |
389 | * - <a href="http://dx.doi.org/10.1103/PhysRevA.28.615">Phys.Rev.A28:615</a> | |
390 | * - <a href="http://root.cern.ch/root/htmldoc/tutorials/fit/langaus.C.html">ROOT implementation</a> | |
9d99b0dd | 391 | * |
7f759bb7 | 392 | * @param x Where to evaluate @f$ f_N@f$ |
393 | * @param delta @f$ \Delta_1@f$ | |
394 | * @param xi @f$ \xi_1@f$ | |
395 | * @param sigma @f$ \sigma_1@f$ | |
396 | * @param sigma_n @f$ \sigma_n@f$ | |
397 | * @param n @f$ N@f$ in the sum above. | |
398 | * @param a Array of size @f$ N-1@f$ of the weights @f$ a_i@f$ for | |
399 | * @f$ i > 1@f$ | |
400 | * | |
401 | * @return @f$ f_N(x;\Delta,\xi,\sigma')@f$ | |
9d99b0dd | 402 | */ |
7f759bb7 | 403 | static Double_t NLandauGaus(Double_t x, Double_t delta, Double_t xi, |
404 | Double_t sigma, Double_t sigma_n, Int_t n, | |
fb3430ac | 405 | const Double_t* a); |
0bd4b00f | 406 | /** |
407 | * Generate a TF1 object of @f$ f_I@f$ | |
408 | * | |
409 | * @param c Constant | |
410 | * @param delta @f$ \Delta@f$ | |
411 | * @param xi @f$ \xi_1@f$ | |
412 | * @param sigma @f$ \sigma_1@f$ | |
413 | * @param sigma_n @f$ \sigma_n@f$ | |
414 | * @param i @f$ i@f$ - the number of particles | |
415 | * @param xmin Least value of range | |
416 | * @param xmax Largest value of range | |
417 | * | |
418 | * @return Newly allocated TF1 object | |
419 | */ | |
420 | static TF1* MakeILandauGaus(Double_t c, | |
421 | Double_t delta, Double_t xi, | |
422 | Double_t sigma, Double_t sigma_n, | |
423 | Int_t i, | |
424 | Double_t xmin, Double_t xmax); | |
425 | /** | |
426 | * Generate a TF1 object of @f$ f_N@f$ | |
427 | * | |
428 | * @param c Constant | |
429 | * @param delta @f$ \Delta@f$ | |
430 | * @param xi @f$ \xi_1@f$ | |
431 | * @param sigma @f$ \sigma_1@f$ | |
432 | * @param sigma_n @f$ \sigma_n@f$ | |
433 | * @param n @f$ N@f$ - how many particles to sum to | |
434 | * @param a Array of size @f$ N-1@f$ of the weights @f$ a_i@f$ for | |
435 | * @f$ i > 1@f$ | |
436 | * @param xmin Least value of range | |
437 | * @param xmax Largest value of range | |
438 | * | |
439 | * @return Newly allocated TF1 object | |
440 | */ | |
441 | static TF1* MakeNLandauGaus(Double_t c, | |
442 | Double_t delta, Double_t xi, | |
443 | Double_t sigma, Double_t sigma_n, | |
fb3430ac | 444 | Int_t n, const Double_t* a, |
0bd4b00f | 445 | Double_t xmin, Double_t xmax); |
446 | ||
7f759bb7 | 447 | //__________________________________________________________________ |
448 | /** | |
449 | * Structure to do fits to the energy loss spectrum | |
450 | * | |
bd6f5206 | 451 | * @ingroup pwglf_forward |
7f759bb7 | 452 | */ |
453 | struct ELossFitter | |
454 | { | |
c389303e | 455 | enum { |
456 | kC = 0, | |
457 | kDelta, | |
458 | kXi, | |
459 | kSigma, | |
460 | kSigmaN, | |
461 | kN, | |
462 | kA | |
463 | }; | |
7f759bb7 | 464 | /** |
465 | * Constructor | |
466 | * | |
467 | * @param lowCut Lower cut of spectrum - data below this cuts is ignored | |
468 | * @param maxRange Maximum range to fit to | |
469 | * @param minusBins The number of bins below maximum to use | |
470 | */ | |
471 | ELossFitter(Double_t lowCut, Double_t maxRange, UShort_t minusBins); | |
7984e5f7 | 472 | /** |
473 | * Destructor | |
474 | * | |
475 | */ | |
7f759bb7 | 476 | virtual ~ELossFitter(); |
477 | /** | |
478 | * Clear internal arrays | |
479 | * | |
480 | */ | |
481 | void Clear(); | |
482 | /** | |
483 | * Fit a 1-particle signal to the passed energy loss distribution | |
484 | * | |
485 | * Note that this function clears the internal arrays first | |
486 | * | |
487 | * @param dist Data to fit the function to | |
488 | * @param sigman If larger than zero, the initial guess of the | |
489 | * detector induced noise. If zero or less, then this | |
490 | * parameter is ignored in the fit (fixed at 0) | |
491 | * | |
492 | * @return The function fitted to the data | |
493 | */ | |
494 | TF1* Fit1Particle(TH1* dist, Double_t sigman=-1); | |
495 | /** | |
496 | * Fit a N-particle signal to the passed energy loss distribution | |
497 | * | |
498 | * If there's no 1-particle fit present, it does that first | |
499 | * | |
500 | * @param dist Data to fit the function to | |
c389303e | 501 | * @param n Number of particle signals to fit |
7f759bb7 | 502 | * @param sigman If larger than zero, the initial guess of the |
503 | * detector induced noise. If zero or less, then this | |
504 | * parameter is ignored in the fit (fixed at 0) | |
505 | * | |
506 | * @return The function fitted to the data | |
507 | */ | |
508 | TF1* FitNParticle(TH1* dist, UShort_t n, Double_t sigman=-1); | |
fb3430ac | 509 | /** |
510 | * Get Lower cut on data | |
511 | * | |
512 | * @return Lower cut on data | |
513 | */ | |
514 | Double_t GetLowCut() const { return fLowCut; } | |
515 | /** | |
516 | * Get Maximum range to fit | |
517 | * | |
518 | * @return Maximum range to fit | |
519 | */ | |
520 | Double_t GetMaxRange() const { return fMaxRange; } | |
521 | /** | |
522 | * Get Number of bins from maximum to fit 1st peak | |
523 | * | |
524 | * @return Number of bins from maximum to fit 1st peak | |
525 | */ | |
526 | UShort_t GetMinusBins() const { return fMinusBins; } | |
527 | /** | |
528 | * Get Array of fit results | |
529 | * | |
530 | * @return Array of fit results | |
531 | */ | |
532 | const TObjArray& GetFitResults() const { return fFitResults; } | |
533 | /** | |
534 | * Get Array of fit results | |
535 | * | |
536 | * @return Array of fit results | |
537 | */ | |
538 | TObjArray& GetFitResults() { return fFitResults; } | |
539 | /** | |
540 | * Get Array of functions | |
541 | * | |
542 | * @return Array of functions | |
543 | */ | |
544 | const TObjArray& GetFunctions() const { return fFunctions; } | |
545 | /** | |
546 | * Get Array of functions | |
547 | * | |
548 | * @return Array of functions | |
549 | */ | |
550 | TObjArray& GetFunctions() { return fFunctions; } | |
551 | private: | |
7f759bb7 | 552 | const Double_t fLowCut; // Lower cut on data |
553 | const Double_t fMaxRange; // Maximum range to fit | |
554 | const UShort_t fMinusBins; // Number of bins from maximum to fit 1st peak | |
555 | TObjArray fFitResults; // Array of fit results | |
556 | TObjArray fFunctions; // Array of functions | |
557 | }; | |
0bd4b00f | 558 | /* @} */ |
7f759bb7 | 559 | |
560 | ||
0bd4b00f | 561 | //================================================================== |
562 | /** | |
563 | * @{ | |
564 | * @name Convenience containers | |
565 | */ | |
7e4038b5 | 566 | /** |
567 | * Structure to hold histograms | |
568 | * | |
bd6f5206 | 569 | * @ingroup pwglf_forward |
7e4038b5 | 570 | */ |
571 | struct Histos : public TObject | |
572 | { | |
573 | /** | |
574 | * Constructor | |
575 | * | |
576 | * | |
577 | */ | |
578 | Histos() : fFMD1i(0), fFMD2i(0), fFMD2o(0), fFMD3i(0), fFMD3o(0) {} | |
579 | /** | |
580 | * Copy constructor | |
581 | * | |
582 | * @param o Object to copy from | |
583 | */ | |
584 | Histos(const Histos& o) | |
585 | : TObject(o), | |
586 | fFMD1i(o.fFMD1i), | |
587 | fFMD2i(o.fFMD2i), | |
588 | fFMD2o(o.fFMD2o), | |
589 | fFMD3i(o.fFMD3i), | |
590 | fFMD3o(o.fFMD3o) | |
591 | {} | |
592 | /** | |
593 | * Assignement operator | |
594 | * | |
595 | * @return Reference to this | |
596 | */ | |
597 | Histos& operator=(const Histos&) { return *this;} | |
598 | /** | |
b7ab8a2c | 599 | * Destructor. This does not delete the interally allocated |
600 | * memory. Use the member function Delete for that. | |
7e4038b5 | 601 | */ |
602 | ~Histos(); | |
b7ab8a2c | 603 | /** |
604 | * Clear internal memory. Note, if the internal histograms are | |
605 | * added to an output container, then we must not free this | |
606 | * memory. | |
607 | */ | |
608 | void Delete(Option_t* opt=""); | |
7e4038b5 | 609 | /** |
610 | * Initialize the object | |
611 | * | |
612 | * @param etaAxis Eta axis to use | |
613 | */ | |
614 | void Init(const TAxis& etaAxis); | |
615 | /** | |
616 | * Make a histogram | |
617 | * | |
618 | * @param d Detector | |
619 | * @param r Ring | |
620 | * @param etaAxis Eta axis to use | |
621 | * | |
622 | * @return Newly allocated histogram | |
623 | */ | |
624 | TH2D* Make(UShort_t d, Char_t r, const TAxis& etaAxis) const; | |
625 | /** | |
626 | * Clear data | |
627 | * | |
628 | * @param option Not used | |
629 | */ | |
630 | void Clear(Option_t* option=""); | |
631 | // const TH2D* Get(UShort_t d, Char_t r) const; | |
632 | /** | |
633 | * Get the histogram for a particular detector,ring | |
634 | * | |
635 | * @param d Detector | |
636 | * @param r Ring | |
637 | * | |
638 | * @return Histogram for detector,ring or nul | |
639 | */ | |
640 | TH2D* Get(UShort_t d, Char_t r) const; | |
641 | TH2D* fFMD1i; // Histogram for FMD1i | |
642 | TH2D* fFMD2i; // Histogram for FMD2i | |
643 | TH2D* fFMD2o; // Histogram for FMD2o | |
644 | TH2D* fFMD3i; // Histogram for FMD3i | |
645 | TH2D* fFMD3o; // Histogram for FMD3o | |
9d99b0dd | 646 | |
647 | ClassDef(Histos,1) | |
7e4038b5 | 648 | }; |
649 | ||
9d99b0dd | 650 | //__________________________________________________________________ |
ca610c5c | 651 | /** |
652 | * Base class for structure holding ring specific histograms | |
653 | * | |
bd6f5206 | 654 | * @ingroup pwglf_forward |
ca610c5c | 655 | */ |
9d99b0dd | 656 | struct RingHistos : public TObject |
657 | { | |
ca610c5c | 658 | /** |
659 | * Constructor | |
660 | * | |
661 | */ | |
9d99b0dd | 662 | RingHistos() : fDet(0), fRing('\0'), fName("") {} |
ca610c5c | 663 | /** |
664 | * | |
665 | * | |
666 | * @param d Detector | |
667 | * @param r Ring | |
668 | */ | |
9d99b0dd | 669 | RingHistos(UShort_t d, Char_t r) |
670 | : fDet(d), fRing(r), fName(TString::Format("FMD%d%c", d, r)) | |
671 | {} | |
ca610c5c | 672 | /** |
673 | * Copy constructor | |
674 | * | |
675 | * @param o Object to copy from | |
676 | */ | |
9d99b0dd | 677 | RingHistos(const RingHistos& o) |
678 | : TObject(o), fDet(o.fDet), fRing(o.fRing), fName(o.fName) | |
679 | {} | |
ca610c5c | 680 | /** |
681 | * | |
682 | */ | |
9d99b0dd | 683 | virtual ~RingHistos() {} |
ca610c5c | 684 | /** |
685 | * Assignement operator | |
686 | * | |
687 | * @param o Object to assign from | |
688 | * | |
689 | * @return Reference to this | |
690 | */ | |
9d99b0dd | 691 | RingHistos& operator=(const RingHistos& o) |
692 | { | |
d015ecfe | 693 | if (&o == this) return *this; |
9d99b0dd | 694 | TObject::operator=(o); |
695 | fDet = o.fDet; | |
696 | fRing = o.fRing; | |
697 | fName = o.fName; | |
698 | return *this; | |
699 | } | |
ca610c5c | 700 | /** |
7984e5f7 | 701 | * Define the outout list in @a d |
ca610c5c | 702 | * |
7984e5f7 | 703 | * @param d Where to put the output list |
ca610c5c | 704 | * |
7984e5f7 | 705 | * @return Newly allocated TList object or null |
ca610c5c | 706 | */ |
9d99b0dd | 707 | TList* DefineOutputList(TList* d) const; |
ca610c5c | 708 | /** |
7984e5f7 | 709 | * Get our output list from the container @a d |
ca610c5c | 710 | * |
7984e5f7 | 711 | * @param d where to get the output list from |
ca610c5c | 712 | * |
7984e5f7 | 713 | * @return The found TList or null |
ca610c5c | 714 | */ |
fb3430ac | 715 | TList* GetOutputList(const TList* d) const; |
ca610c5c | 716 | /** |
7984e5f7 | 717 | * Find a specific histogram in the source list @a d |
ca610c5c | 718 | * |
7984e5f7 | 719 | * @param d (top)-container |
720 | * @param name Name of histogram | |
ca610c5c | 721 | * |
7984e5f7 | 722 | * @return Found histogram or null |
ca610c5c | 723 | */ |
fb3430ac | 724 | TH1* GetOutputHist(const TList* d, const char* name) const; |
ca610c5c | 725 | /** |
726 | * | |
727 | * | |
728 | * | |
729 | * @return | |
730 | */ | |
7f759bb7 | 731 | Color_t Color() const |
732 | { | |
cc83fca2 | 733 | return AliForwardUtil::RingColor(fDet, fRing); |
7f759bb7 | 734 | } |
290052e7 | 735 | /** |
736 | * The name of this ring | |
737 | * | |
738 | * @return Name of this ring | |
739 | */ | |
5bb5d1f6 | 740 | const char* GetName() const { return fName.Data(); } |
ca610c5c | 741 | UShort_t fDet; // Detector |
742 | Char_t fRing; // Ring | |
743 | TString fName; // Name | |
9d99b0dd | 744 | |
745 | ClassDef(RingHistos,1) | |
746 | }; | |
0bd4b00f | 747 | /* @} */ |
f53fb4f6 | 748 | |
749 | //__________________________________________________________________ | |
290052e7 | 750 | /** |
751 | * A guard idom for producing debug output | |
752 | * | |
753 | */ | |
f53fb4f6 | 754 | struct DebugGuard |
755 | { | |
290052e7 | 756 | /** |
757 | * Constructor | |
758 | * | |
759 | * @param lvl Current level | |
760 | * @param msgLvl Target level | |
761 | * @param format @c printf -like format | |
762 | * | |
763 | * @return | |
764 | */ | |
f53fb4f6 | 765 | DebugGuard(Int_t lvl, Int_t msgLvl, const char* format, ...); |
290052e7 | 766 | /** |
767 | * Destructor | |
768 | */ | |
f53fb4f6 | 769 | ~DebugGuard(); |
290052e7 | 770 | /** |
771 | * Make a message | |
772 | * | |
773 | * @param lvl Current level | |
774 | * @param msgLvl Target level | |
775 | * @param format @c printf -like format | |
776 | */ | |
40e32ce9 | 777 | static void Message(Int_t lvl, Int_t msgLvl, const char* format, ...); |
f53fb4f6 | 778 | private: |
290052e7 | 779 | /** |
780 | * Output the message | |
781 | * | |
782 | * @param in Direction | |
783 | * @param msg Message | |
784 | */ | |
40e32ce9 | 785 | static void Output(int in, TString& msg); |
290052e7 | 786 | /** |
787 | * Format a message | |
788 | * | |
789 | * @param out Output is stored here | |
790 | * @param format @c printf -like format | |
791 | * @param ap List of arguments | |
792 | */ | |
40e32ce9 | 793 | static void Format(TString& out, const char* format, va_list ap); |
f53fb4f6 | 794 | TString fMsg; |
795 | }; | |
8e400b14 | 796 | private: |
290052e7 | 797 | /** |
798 | * Constructor | |
799 | */ | |
8e400b14 | 800 | AliForwardUtil() {} |
290052e7 | 801 | /** |
802 | * Copy constructor | |
803 | * | |
804 | * @param o Object to copy from | |
805 | */ | |
8e400b14 | 806 | AliForwardUtil(const AliForwardUtil& o) : TObject(o) {} |
290052e7 | 807 | /** |
808 | * Assingment operator | |
809 | * | |
810 | * | |
811 | * @return Reference to this object | |
812 | */ | |
8e400b14 | 813 | AliForwardUtil& operator=(const AliForwardUtil&) { return *this; } |
290052e7 | 814 | /** |
815 | * Destructor | |
816 | */ | |
8e400b14 | 817 | ~AliForwardUtil() {} |
818 | ||
819 | ||
820 | ClassDef(AliForwardUtil,1) // Utilities - do not make object | |
7e4038b5 | 821 | }; |
822 | ||
40e32ce9 | 823 | // #ifdef LOG_NO_DEBUG |
824 | // # define DGUARD(L,N,F,...) do {} while(false) | |
825 | // #else | |
290052e7 | 826 | /** |
827 | * Macro to declare a DebugGuard | |
828 | * | |
829 | * @param L Current debug level | |
830 | * @param N Target debug level | |
831 | * @param F @c printf -like Format | |
832 | */ | |
f53fb4f6 | 833 | # define DGUARD(L,N,F,...) \ |
834 | AliForwardUtil::DebugGuard _GUARD(L,N,F, ## __VA_ARGS__) | |
290052e7 | 835 | /** |
836 | * Macro to make a debug message, using DebugGuard::Message | |
837 | * | |
838 | * @param L Current debug level | |
839 | * @param N Target debug level | |
840 | * @param F @c printf -like Format | |
841 | */ | |
40e32ce9 | 842 | # define DMSG(L,N,F,...) \ |
843 | AliForwardUtil::DebugGuard::Message(L,N,F, ## __VA_ARGS__) | |
844 | // #endif | |
7e4038b5 | 845 | #endif |
846 | // Local Variables: | |
847 | // mode: C++ | |
848 | // End: | |
849 |