Binary Spectral Imaging API: Difference between revisions
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: (MS Visual Studio 2017 Solution with C++ projects of Windows CLR programs) | : (MS Visual Studio 2017 Solution with C++ projects of Windows CLR programs) | ||
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[[File:SpectraImg1-screenshot.png|frame| | [[File:SpectraImg1-screenshot.png|frame|center|alt=The SpectraImg examples screenshot|The SpectraImg examples screenshot]] | ||
= Related = | = Related = | ||
* [[Pixet_SDK|Pixet SDK]] | * [[Pixet_SDK|Pixet SDK]] | ||
* [[Files and directories of the Pixet and SDK#Main directory of the API-using programs, independent on the Pixet|Files and directories: Main directory of the API-using programs]] | * [[Files and directories of the Pixet and SDK#Main directory of the API-using programs, independent on the Pixet|Files and directories: Main directory of the API-using programs]] |
Revision as of 10:02, 2 January 2024
Under construction
- Under construction
- Under construction
- Under construction
- Under construction
- Under construction
Introduction
The SpectraImg is designed for easy working with an energy spectras. It can work with previous saved data using the pxpClReplayData or with physical device using the pxpClStartMeasurement. Measured data will be clusterized, clusters will be will be divided into the required number of channels. Next you can use some frame-generating functions and data will be filtered by applied criteria and converted to pixels on output images. Or use graph-generating functions to generate graphs.
The Spectral imaging API basic workflow
This API is defined in the spectraimgapi.h file.
Typical usage:
- Measuring, processing and use of the processed data
- 1.a Load the Pixet core using pxpSiLoadPixetCore("pxcore.dll");
- 1.b Or normally start the application using the Pixet core API pxcInitialize function, get the core pointer using pxcGetIPixet(), set the core pointer to the SpectraImg API using pxpSiSetIPixet(iPixet);
- 2. Get the SpectraImg instance using pxpSiCreate(device_index);
- 3. Set-up the callbacks (not required).
- 4. Load device calibration (not required).
- 5. Set the measurement parameters using the pxpSiSetMeasParams.
- 6. Set the X-ray fluorescence compensation parameters (not required) pxpSiSetXrfCorrectionParams.
- 7.a Start the measurement using pxpSiStartMeasurement.
- 7.b Or replay old data using the pxpSiReplayData function.
- 8. Wait for measurement and processing is complete (and display the progress) using while-pxpSiIsRunning.
- 9. Use some get… method and use the processed data.
- 10. Deinitialize the Pixet core, if the pxcInitialize was used in step 1.
- Using BSTG files to save processing time
- 1. After processing is complete (end of waiting steps above), use the pxpSiSaveToFile(handle, "file.bstg") method.
- 2. Anytime later use the pxpSiLoadFromFile(handle, "file.bstg").
- 3. Use the pxpSiGetMeasParams to evaluate measure settings or set it to your program variables or GUI
- 4. Continue using the data as it was processed. The program now is in the step 9 of the list above.
General functions
LoadPixetCore and UnloadPixetCore
pxpSiLoadPixetCore
- Loads the pixet core library (pxcore.dll/so). When the measurement with a device is intented the user has to either load pixet core with this function, or if the core is already loaded in the application (pxcore.dll/so was loaded separatelly), the setIPixet function has to be called.
- Definition
PXSIAPI int pxpSiLoadPixetCore(const char* pxCoreLibPath);
Parameters
- pxCoreLibPath – path to the pxcore library
- Return value
- 0 if successful, otherwise the return value is a SI_ERR_XXX code.
Example
int rc = pxpSiLoadPixetCore("pxcore.dll");
errorToList("pxpSiLoadPixetCore", rc);
pxpSiUnloadPixetCore
- Deinitializes ane unloads the Pixet core.
- Definition
PXSIAPI void pxpSiUnloadPixetCore();
Parameters
- (no pars)
- Return value
- (void)
SetIPixet and GetIPixet
pxpSiSetIPixet
- Sets the internal Pixet API pointer. This is used when pxcore library is loaded separatelly in application. The use must pointer obtained via function pxcGetIPixet and should not load the pixet core with pxpSiLoadPixetCore function.
- Definition
PXSIAPI void pxpSiSetIPixet(void* pixet);
Parameters
- pixet – The iPixet pointer from the pxcGetIPixet() function of the pxcore API.
- Return value
- (void)
Example
iPixet = pxcGetIPixet(); // Warning: Use the pxcGetIPixet from pxcapi.h,
// not pxpSIGetIPixet from spectraimgapi.h
if (iPixet==0) msgToList("pxcGetIPixet=NULL"); else msgToList("pxcGetIPixet OK");
pxpClSetIPixet(iPixet);
pxpSiGetIPixet
- Return internal Pixet structure pointer or 0 if not set.
- Can be used if you want use functions of the pxcore API if the program was started using pxpSiLoadPixetCore.
- Definition
PXSIAPI void* pxpSiGetIPixet();
Parameters
- (no pars)
- Return value
- internal Pixet structure pointer or 0 if failed
Warning
- Do not confuse this with the pxcGetIPixet() function of the pxcore API.
Create and Free
pxpSiLoadPixetCore
- Definition
PXSIAPI sihandle_t pxpSiLoadPixetCore(int deviceIndex=SI_NO_DEVICE);
Parameters
- deviceIndex – index of the device this SpectraImg instance will manage.
- If used offline (pxcore library not loaded), use SI_NO_DEVICE. The measurement will be not possible. Only replaying of data.
- Return value
- the handle of newly create instance of Spectra Imaging, or SI_INVALID_HANDLE if error
Note
- If no device present, device with idx 0 is virtual file device. This is second way to offline use.
Example
siHandle = pxpSiCreate(0);
if (siHandle==CL_INVALID_HANDLE) msgToList("pxpSiCreate INVALID");
else msgToList("pxpSiCreate OK");
pxpSiFree
- Frees the created instance of SpectraImg.
- Definition
PXSIAPI int pxpSiFree(sihandle_t handle);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- Return value
- 0 if successful, otherwise the return value is a SI_ERR_XXX code.
GetLastError
pxpSiGetLastError
- Gets the last error message - when a function returns error code. Gets either global message when handle = 0, or message for the specific SpectraImg instance. You can use this function or the message callback.
- Definition
PXSIAPI int pxpSiGetLastError(clhandle_t handle, char* errorMsgBuffer, unsigned size);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- errorMsgBuffer – output buffer where the error message will be stored
- size – size of the supplied errorMsgBuffer
- Return value
- 0 if successful, otherwise the return value is a SI_ERR_XXX code.
Example
// Using the pxpSiGetLastError in C++ CLR Windows app
const unsigned cErrBufSize = 512;
// primary use to show function name, return code, last error message
void errorToList(const char* fName, int rc) {
char errorMsg[cErrBufSize];
char cMsg[cErrBufSize];
pxpSiGetLastError(clHandle, errorMsg, cErrBufSize);
if (rc!=0) {
sprintf(cMsg, "%s %d err: %s", fName, rc, errorMsg);
} else {
sprintf(cMsg, "%s %d err: ---", fName, rc);
};
String^ sMsg = gcnew String(cMsg);
msgToList(sMsg);
}
Load calibration functions and test if calibration loaded
pxpSiLoadCalibrationFromDevice
- Loads the calibrations from the physically connected device. The device must support this feature. Minipix Tpx3 for example.
- Definition
PXSIAPI int pxpSiLoadCalibrationFromDevice(sihandle_t handle);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- Return value
- 0 if successful, otherwise the return value is a SI_ERR_XXX code.
pxpSiLoadCalibrationFromFiles
- Loads the calibration files (a,b,c,t files or a single xml device config file).
- Definition
PXSIAPI int pxpSiLoadCalibrationFromFiles(sihandle_t handle, const char* filePaths);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- filePaths – Path to the file(s), variants:
- The device xml config file
- The four ABCT text files separated by the | symbol.
- Return value
- 0 if successful, otherwise the return value is a SI_ERR_XXX code.
Example
rc = pxpSiLoadCalibrationFromFiles("mydetector.xml");
rc = pxpSiLoadCalibrationFromFiles("calibA.txt|calibB.txt|calibC.txt|calibT.txt");
pxpSiIsCalibrationLoaded
- Test if calibration is loaded.
- Definition
PXSIAPI int pxpSiIsCalibrationLoaded(clhandle_t handle);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- Return value
- Returns > 0 is loaded, = 0 not loaded, < 0 error
Example
int rc = pxpSiIsCalibrationLoaded(si);
if (rc<0) {
print("pxpSiIsCalibrationLoaded: error %d", rc);
} else if (rc==0) {
print("pxpSiIsCalibrationLoaded: Not loaded - output will NOT be calibrated (raw ToT values)");
} else {
print("pxpSiIsCalibrationLoaded: Loaded - output data will be calibrated (keV)");
}
SetMeasParams, GetMeasParams and SetXrfCorrectionParams
pxpSiSetMeasParams
- Sets the parameters of the future measurement and processing
- Definition
PXSIAPI int pxpSiSetMeasParams(clhandle_t handle, int spectFrom, int spectTo, double spectStep, bool maskNoisyPixels, bool doSubPixCorrection, bool correctXrf);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- spectFrom – minimal spectrum energy [keV]
- spectTo – maximal spectrum energy [keV]
- spectStep – Step width in the spectrum [keV] (float, but values significantly <1 may not work correctly).
- maskNoisyPixels – if measuring, periodically checks for noisy pixels and masks them
- doSubPixCorrection – if special filter should be applied to sub pixel images
- correctXrf – if the CdTe sensor internal fluorescence should be corected
- Enable (true) or disable (false) XRF correction. Detected XRF energy will replaced by 25 keV.
- Return value
- 0 if successful, otherwise the return value is a SI_ERR_XXX code.
Example
// set-up future spectrum measuring or processing to:
// 500 to 1500 keV with steps 1.25, enable noisy masking and XRF correction
int rc = pxpSiSetMeasParams(si, 500, 1500, 1.25, true, false, true);
errorToList("pxpSiSetMeasParams", rc);
pxpSiGetMeasParams
- Reads the processing parameters of the data in the SpectraImg instance memory.
- (The parameters are pointers to output variables with the some meaning as the pxpSiSetMeasParams parameters)
- Usesfull after loading a BSTG file.
- Definition
PXSIAPI int pxpSiGetMeasParams(clhandle_t handle, int* spectFrom, int* spectTo, double* spectStep, bool* maskNoisyPixels, bool* doSubPixCorrection, bool* correctXrf);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- *spectFrom – pointer to store minimal spectrum energy [keV]
- *spectTo – pointer to store maximal spectrum energy [keV]
- *spectStep – pointer to store step width in the spectrum [keV] (float, but values significantly <1 may not work correctly).
- *maskNoisyPixels – pointer to store setting if measuring, periodically checks for noisy pixels and masks them
- *doSubPixCorrection – pointer to store setting if special filter should be applied to sub pixel images
- *correctXrf – pointer to store setting if the CdTe sensor internal fluorescence should be corected
- Enable (true) or disable (false) XRF correction. Detected XRF energy will replaced by 25 keV.
- Return value
- 0 if successful, otherwise the return value is a SI_ERR_XXX code.
pxpSiSetXrfCorrectionParams
- Sets the paramaters of the CdTe XRF correction in the future measurement and processing
- Definition
PXSIAPI int pxpSiSetXrfCorrectionParams(clhandle_t handlee, double minVol, double maxVol, double toaDiff, bool remove);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- minVol – minimal energy volume of event to be considered as XRF
- maxVol – maximal energy volume of event to be considered as XRF
- toaDiff – maximal toa difference between primary and secondary XRF event
- remove – if XRF events should be removed (true) or assigned to original event (false)
- Return value
- 0 if successful, otherwise the return value is a SI_ERR_XXX code.
StartMeasurement, ReplayData, IsRunning and Abort
pxpSiStartMeasurement
- Starts measuremnt with the device for specified time and process the data. Only if the SI connected to the device. If calibration is loaded, energy values will be calibrated. Measurement works in the background. Use while-pxpSiIsRunning() to wait for end, if need it.
- Definition
PXSIAPI int pxpSiStartMeasurement(clhandle_t handle, double acqTime, double measTime, const char* outputFilePath, bool processData);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- acqTime – acquisition time of a single frame / pixel measurement in seconds.
- Primary for frame-based devices (Medipixes, Timepix, no Tpx3): This is single frame time. Use a short enough time to prevent clusters overlapping. Too short time can cause too many losses between frames.
- On data-driven devices (Timepix3, no Timepix), this is the ToA limit. After exceeds, ToA is resets and acqIndex in the internal callbacks is incremented. acqTime=measTime can be used.
- measTime – total time of measurement in seconds. Use 0 to endless measurement (progress will always 100%).
- outptuFilePath – output file where the process data (clusters) will be saved (*.clog). If saving not required, put "".
- processData – if the measured data should be processed online (clustering, filtering)
- Return value
- 0 if successful, otherwise the return value is a SI_ERR_XXX code.
Example
// measure for 100 secs, output file OFF, process the data ON
rc = pxpSiStartMeasurement(siHandle, 100, 100, "", true); // tpx3 version: acq=meas or acq<meas
// pxpSiStartMeasurement(siHandle, 0.1, 100, "", true); // tpx/mpx version: acq safe time
errorToList("pxpSiStartMeasurement", rc);
pxpSiReplayData
- Definition
PXSIAPI int pxpSiReplayData(clhandle_t handle, const char* filePath, const char* outputFilePath);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- filePath – full path to a data file to be replayed
- outptuFilePath – output file where the process data (clusters) will be saved (*.clog). If saving not required, put "".
- Return value
- 0 if successful, otherwise the return value is a SI_ERR_XXX code.
Note
- Clog files: For historical reasons, there are two CLOG formats. Tpx3 have one additional column. The pxpSiReplayData cannot replay CLOG form Tpx3. Use the T3PA instead the CLOG. The T3PA files can be generated by data-driven measuring in the pxcore API.
Example
// replay data from a file
rc = pxpSiReplayData(siHandle, "testdata.t3pa", ""); // tpx3 version
// pxpSiReplayData(siHandle, "testdata.clog", ""); // tpx/mpx version
errorToList("pxpSiReplayData", rc);
pxpSiIsRunning
- Test if the SI is running.
- Definition
PXSIAPI int pxpSiIsRunning(clhandle_t handle);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- Return value
- Returns 1 if running, 0 = not running, < 0 error.
Example
// Commandline app:
while(pxpSiIsRunning(siHandle)) {
// do something while measuring or replaying
}
// Windows app:
int rc = pxpSiIsRunning(siHandle);
if (rc>=0) labelStatus->Text = rc ? "Running..." : "(stopped)";
else errorToList("pxpSiIsRunning", rc);
pxpSiAbort
- Aborts the measurement or replaying of the data.
- Definition
PXSIAPI int pxpSiAbort(clhandle_t handle);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- Return value
- 0 if successful, otherwise the return value is a SI_ERR_XXX code.
BSTG files: pxpSiSaveToFile and pxpSiLoadFromFile
These functions allow you to save CPU time: Save the processed data with all settings and reuse it in future.
pxpSiSaveToFile
- Saves the measurement, processing results and settings to a file
- Definition
PXSIAPI int pxpSiSaveToFile(clhandle_t handle, const char* filePath);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- filePath – full path to a measurement will be saved (*.bstg)
- Return value
- 0 if successful, otherwise the return value is a SI_ERR_XXX code.
pxpSiLoadFromFile
- Loads the saved measurement including settings and processed data from a file
- Definition
PXSIAPI int pxpSiLoadFromFile(clhandle_t handle, const char* filePath);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- filePath – full path to the saved measurement file (*.bstg)
- Return value
- 0 if successful, otherwise the return value is a SI_ERR_XXX code.
Example
int rc;
int spectFrom = -1;
int spectTo = -1;
double spectStep = -1;
bool maskNoisyPixels, doSubPixCorrection, correctXrf;
rc = pxpSiLoadFromFile(siHandle, "testfile.bstg");
errorToList("pxpSiLoadFromFile", rc);
rc = pxpSiGetMeasParams(siHandle, &spectFrom, &spectTo, &spectStep, &maskNoisyPixels, &doSubPixCorrection, &correctXrf);
errorToList("pxpSiGetMeasParams", rc);
msgToList(String::Format("From {0}, To {1}, Step {2}, Mask {3}, SubPix {4}, XRF {5}",
spectFrom, spectTo, spectStep, maskNoisyPixels, doSubPixCorrection, correctXrf));
Related declarations
/// Callback for messages and error messages returned from the SDK
/// @param error - true if error message
/// @param message - text of the message
/// @param userData - data of the user that were set in set callback function
typedef void (*SiMessageCallback)(bool error, const char* message, void* userData);
/// Callback for progress of an operation
/// @param finished - true if operation finished
/// @param progress - percentage of progress 0 - 100
/// @param userData - data of the user that were set in set callback function
typedef void (*SiProgressCallback)(bool finished, double progress, void* userData);
- userData
- See Binary core API: pxcRegisterAcqEvent
SetMessageCallback and SetProgressCallback
pxpSiSetMessageCallback
- Callback for messages and error messages returned from the API.
- Definition
PXSIAPI int pxpSiSetMessageCallback(clhandle_t handle, SiMessageCallback callback, void* userData);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- callback – The callback function. The SiMessageCallback is defined in the spectraimgapi.h.
- userData – A pointer to the user data that was set in the registration of the callback function. Useful if the callback is registered multiple times, for example.
- Return value
- 0 if successful, otherwise the return value is a SI_ERR_XXX code.
pxpSiSetProgressCallback
- Callback for progress of an operation. Occurs every 1 second while measuring or processing. If measuring and processing, occurs twice.
- Definition
PXSIAPI int pxpSiSetProgressCallback(clhandle_t handle, SiProgressCallback callback, void* userData);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- callback – The callback function. The SiProgressCallback is defined in the spectraimgapi.h.
- userData – A pointer to the user data that was set in the registration of the callback function. Useful if the callback is registered multiple times, for example.
- Return value
- 0 if successful, otherwise the return value is a SI_ERR_XXX code.
ProcessedPixelsPerSecond and MeasuredPixelsPerSecond
pxpSiMeasuredPixelsPerSecond
- Returns the number of measured pixels per seconds.
- Definition
PXSIAPI double pxpSiMeasuredPixelsPerSecond(clhandle_t handle);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- Return value
- if positive, measured pixel count per second, if negative error code (SI_ERR_XXX)
pxpSiProcessedPixelsPerSecond
- Returns the number of processed pixels per seconds.
- Definition
PXSIAPI double pxpSiProcessedPixelsPerSecond(clhandle_t handle);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- Return value
- if positive, processed pixel count per second, if negative error code (SI_ERR_XXX)
Progress callback with px/sec example
void ProgressCallbackFn(bool finished, double progress, void* userData) {
char *fin = "(working)", *finF = "(finished)";
static int cnt = 0;
double mpps = pxpSiMeasuredPixelsPerSecond(siHandle);
double ppps = pxpSiProcessedPixelsPerSecond(siHandle);
if (finished) fin = finF;
sprintf(clbStatText, "Progress: %s, cnt %d, prog %.2f %%, measured: %.2f px/s, processed: %.2f px/s", fin, cnt, progress, mpps, ppps);
cnt++;
// acquisition and processing both generating this callback
// (double cnt per new percents while measuring, single while offline processing)
if (finished) {
cnt = 0; // This not occurs if error occured and process failed.
}
}
Functions that using the output data
pxpSiSpectrumSize
- Returns spectrum size
- Definition
PXSIAPI int pxpSiSpectrumSize(clhandle_t handle);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- Return value
- if positive, processed pixel count per second, if negative error code (SI_ERR_XXX)
pxpSiSaveDataAsFramesToFile
- Saves generated spectra images (for each energy) to frame files.
- Definition
PXSIAPI int pxpSiSaveDataAsFramesToFile(clhandle_t handle, const char* filePath, bool oneFile);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- fielPath – full path of a base file name.
- Each frame file will have and number suffix corresponding to the energy bin.
- oneFile – whether the images should be saved into a single multi frame file (*.pmf)
- Return value
- 0 if successful, otherwise the return value is a SI_ERR_XXX code.
pxpSiSaveDataAsSpectrumToFile
- Saves generated spectra images as a list of spectra for each pixel (file with 65536 spectras at 65536 lines)
- Definition
PXSIAPI int pxpSiSaveDataAsSpectrumToFile(clhandle_t handle, const char* filePath);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- filePath – full path to the file where spectra will be saved
- Return value
- 0 if successful, otherwise the return value is a SI_ERR_XXX code.
pxpSiGetFrameForEnergy
- Gets the data of the image (frame) for a selected energy index or sum image if selected.
- Definition
PXSIAPI int pxpSiGetFrameForEnergy(clhandle_t handle, unsigned energyIndex, bool sumFrame, bool normalize, int zoom, double* frameData, size_t* width, size_t* height);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- energyIndex – index of the energy bin to get the frame. If sum frame selected, this is ignored.
- sumFrame – if sum frame from all energy bins should be returned
- zoom – zoom factor (1, 2, or 3) for sub pixel frame. Only avaiable when sum frame is selected
- normalize – whether the image should be normalized by the spectrum
- frameData – buffer where the frame will be saved
- *width [in/out] – pointer to the width of the frame.*note
- *height [in/out] – pointer to the height of the frame.*note
- Return value
- 0 if successful, otherwise the return value is a SI_ERR_XXX code.
Note
- *Width and height are for energy bin frame and single detector = 256.
- If SumFrame used and with zoom factor, then 256 * 2^zoom.
pxpSiGetFrameForEnergyRange
- Gets the data of the image (frame) for a selected energy range (frame is sum of frames for each energy bin).
- Definition
PXSIAPI int pxpSiGetFrameForEnergyRange(clhandle_t handle, unsigned energyIndexFrom, unsigned energyIndexTo, bool normalize, double* frameData, size_t* width, size_t* height);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- energyIndexFrom – first energy index in the range
- energyIndexTo – last energy index in the range
- normalize – whether the image should be normalized by the spectrum
- *frameData – buffer where the frame will be saved
- *width [in/out] – pointer to the width of the frame.*note
- *height [in/out] – pointer to the height of the frame.*note
- Return value
- 0 if successful, otherwise the return value is a SI_ERR_XXX code.
Note
- *Width and height are for energy bin frame and single detector = 256.
pxpSiGetGlobalSpectrum
- Gets the global energy spectrum
- Definition
PXSIAPI int pxpSiGetGlobalSpectrum(clhandle_t handle, unsigned* data, double* step, size_t* size);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- *data – data buffer where the spectrum will be stored
- step – step of the spectra
- *size [in/out] – pointer to the size of the supplied buffer. if buffer small, size will contain correct size.
- Correct spectrum size can be obtained via pxpSiSpectrumSize function.
- Return value
- 0 if successful, otherwise the return value is a SI_ERR_XXX code.
pxpSiGetGlobalSpectrumInRect
- Gets the global energy spectrum in selected frame rectangle
- Definition
PXSIAPI int pxpSiGetGlobalSpectrumInRect(clhandle_t handle, unsigned x1, unsigned y1, unsigned x2, unsigned y2, unsigned* data, double* step, size_t* size);
Parameters
- handle – SpectraImg handle received from function pxpSiCreate
- x1 – left coordinate of the rectangle
- y1 – top coordinate of the rectangle
- x2 – right coordinate of the rectangle
- y2 – bottom coordinate of the rectangle
- *data – data buffer where the spectrum will be stored
- step – step of the spectra
- *size [in/out] – pointer to the size of the supplied buffer. if buffer small, size will contain correct size.
- Correct spectrum size can be obtained via pxpSiSpectrumSize function.
- Return value
- 0 if successful, otherwise the return value is a SI_ERR_XXX code.
Examples
This chapter containing parts of example project SpectraImg from the AdvacamAPIexamples collection.
- Download the AdvacamAPIexamples package
- https://advacam.com/examples/AdvacamAPIexamples.rar
- (MS Visual Studio 2017 Solution with C++ projects of Windows CLR programs)