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EMAN::FileFourierProcessor Class Reference

A fourier processor specified in a 2 column text file. More...

#include <processor.h>

Inheritance diagram for EMAN::FileFourierProcessor:

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Collaboration diagram for EMAN::FileFourierProcessor:

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List of all members.

Public Member Functions

virtual void process_inplace (EMData *image)
 To process an image in-place.
virtual string get_name () const
 Get the processor's name.
virtual string get_desc () const
 Get the descrition of this specific processor.
virtual TypeDict get_param_types () const
 Get processor parameter information in a dictionary.

Static Public Member Functions

ProcessorNEW ()

Static Public Attributes

const string NAME = "eman1.filter.byfile"

Detailed Description

A fourier processor specified in a 2 column text file.

Parameters:
filename file name for a 2 column text file which specified a radial function data array

Definition at line 5268 of file processor.h.


Member Function Documentation

virtual string EMAN::FileFourierProcessor::get_desc  )  const [inline, virtual]
 

Get the descrition of this specific processor.

This function must be overwritten by a subclass.

Returns:
The description of this processor.

Implements EMAN::Processor.

Definition at line 5278 of file processor.h.

05279                 {
05280                         return "A fourier processor specified in a 2 column text file.";
05281                 }

virtual string EMAN::FileFourierProcessor::get_name  )  const [inline, virtual]
 

Get the processor's name.

Each processor is identified by a unique name.

Returns:
The processor's name.

Implements EMAN::Processor.

Definition at line 5273 of file processor.h.

05274                 {
05275                         return NAME;
05276                 }

virtual TypeDict EMAN::FileFourierProcessor::get_param_types  )  const [inline, virtual]
 

Get processor parameter information in a dictionary.

Each parameter has one record in the dictionary. Each record contains its name, data-type, and description.

Returns:
A dictionary containing the parameter info.

Reimplemented from EMAN::Processor.

Definition at line 5288 of file processor.h.

References EMAN::TypeDict::put().

05289                 {
05290                         TypeDict d;
05291                         d.put("filename", EMObject::STRING, "file name for a 2 column text file which specified a radial function data array.");
05292                         return d;
05293                 }

Processor* EMAN::FileFourierProcessor::NEW  )  [inline, static]
 

Definition at line 5283 of file processor.h.

05284                 {
05285                         return new FileFourierProcessor();
05286                 }

void FileFourierProcessor::process_inplace EMData image  )  [virtual]
 

To process an image in-place.

For those processors which can only be processed out-of-place, override this function to just print out some error message to remind user call the out-of-place version.

Parameters:
image The image to be processed.

Implements EMAN::Processor.

Definition at line 5943 of file processor.cpp.

References EMAN::EMData::apply_radial_func(), EMAN::EMData::do_fft(), EMAN::EMData::do_ift(), EMAN::EMData::get_xsize(), in, LOGERR, and LOGWARN.

05944 {
05945         if (!image) {
05946                 LOGWARN("NULL Image");
05947                 return;
05948         }
05949         const char *filename = params["filename"];
05950         float apix = params["apix"];
05951 
05952         FILE *in = fopen(filename, "rb");
05953         if (!in) {
05954                 LOGERR("FileFourierProcessor: cannot open file '%s'", filename);
05955                 return;
05956         }
05957 
05958         float f = 0;
05959         int n = 0;
05960         while (fscanf(in, " %f %f", &f, &f) == 2) {
05961                 n++;
05962         }
05963         rewind(in);
05964 
05965         vector < float >xd(n);
05966         vector < float >yd(n);
05967 
05968         float sf = apix * image->get_xsize();
05969 
05970         for (int i = 0; fscanf(in, " %f %f", &xd[i], &yd[i]) == 2; i++) {
05971                 xd[i] *= sf;
05972         }
05973 
05974         if (xd[2] - xd[1] != xd[1] - xd[0]) {
05975                 LOGWARN("Warning, x spacing appears nonuniform %g!=%g\n",
05976                                 xd[2] - xd[1], xd[1] - xd[0]);
05977         }
05978 
05979         EMData *d2 = image->do_fft();
05980         if( image )
05981         {
05982                 delete image;
05983                 image = 0;
05984         }
05985 
05986         d2->apply_radial_func(xd[0], xd[1] - xd[0], yd, 1);
05987         image = d2->do_ift();
05988 }


Member Data Documentation

const string FileFourierProcessor::NAME = "eman1.filter.byfile" [static]
 

Definition at line 175 of file processor.cpp.


The documentation for this class was generated from the following files:
Generated on Fri Aug 10 16:38:03 2012 for EMAN2 by  doxygen 1.3.9.1