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A few things to note about the different detectors / pyana modules:

  • CsPad: CsPad data is reconstructed in pyana_cspad.py. The image plot value limits are adjusted automatically, but if
    you want to change them, click on the color bar (left-click for low limit, right-click for high limit).
    The successive events will be plotted with the new limits. Revert to the original by middle-clicking.
    To run this module by itself with pyana:
    Code Block
    pyana -m XtcEventBrowser/src/pyana_cspad.py <xtc files>
    
    Options must be specified in a configuration file, or the default values will be used, e.g.:
    Code Block
    image_source    =  CxiDs1-0|Cspad-0   # string, Address of Detector-Id|Device-ID
    draw_each_event =                     # bool, Draw plot for each event? (Default=False).
    dark_img_file   =                     # filename, Dark image file to be loaded, if any
    output_file     =                     # filename for saving numpy array with average of images
    plot_vrange     =                     # range=vmin-vmax (intensity) to be plotted, default is full range
    threshold       =                     # lower threshold for image intensity in threshold area of the plot
    thr_area        =                     # range=xmin,xmax,ymin,ymax defining threshold area
    
  • Pulnix TM6740 images are processed with pyana_image.py. It allows any number of images, given as a space-separated list of addresses in the
    configuration file.
    • Ranges can be given to define dark images, and good images. Background subtracted images can also be used, where average of background images so far collected is subtracted from the good images before plotting.
    • Each image can be separately rotated (Done), shifted (TODO!) and scaled (TODO!). An optional parameter also allow you to set
      nicknames to the images (defaults will be Im1, Im2... etc), these names will be used if you plot differences, or other manipulations of the original
      images.
      Currently it has the following settings:
      Code Block
      
      image_addresses  =  CxiSc1-0|TM6740-1 CxiSc1-0|TM6740-2 CxiSc1-0|TM6740-3 # Address of Detector-Id|Device-Id
      dark_range  =  50--250                # low and high limit for what we define as dark image
      good_range  =  250--1050              # low and high limit for what we define as a good image (with signal)
      image_nicknames = Im1 Im2 Im3         # If none provided, these will be the names
      image_rotations  =  7.1 6.2 5.3       # Angle in degrees
      image_scales  =                       # Scale factor to be applied to zoom in or out 
      image_shifts  =  (0,0) (0,0) (0,0)    # Shift (number of pixels (x,y)) to be applied
      draw_each_event  =  Yes               # plot for each event?
      output_file = test_.txt               # base name for output (numpy arrays) for each event. Valid extensions are .txt (ascii) or .npy (numpy binary) 
      

xtcscanner

This is a command-line interface to the XtcScanner class that makes a summary of the xtc file.

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MatLab

MatPlotLib

Comments

Loglog plot of one array vs. another

Code Block
%
%
%
a1 = subplot(121);
loglog(channels(:,1),channels(:,2),'o')
xlabel('CH0')
ylabel('CH1')
a2 = subplot(122);
loglog(channels(:,3),channels(:,4),'o')
xlabel('CH2')
ylabel('CH3')

Loglog plot of one array vs. another

Code Block
import matplotlib.pyplot as plt
import numpy as np

a1 = plt.subplot(221)
plt.loglog(channels[:,0],channels[:,1], 'o' )
plt.xlabel('CH0')
plt.ylabel('CH1')
a2 = plt.subplot(222)
plt.loglog(channels[:,2],channels[:,3], 'o' )
plt.xlabel('CH2')
plt.ylabel('CH3')

channels is a 4xN array of floats, where N is the number of events. Each column corresponds to one out of four Ipimb channels.

Note that the arrays are indexed with 1,2,3,4 in MatLab and 0,1,2,3 in MatPlotLib/NumPy/Python.

<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="8f8e6af1e7f3571f-57032a51-482a4408-978fb062-aa4fb0435710a77abf7c9837"><ac:plain-text-body><![CDATA[Note also the use of paranthesis, array() in MatLab, array[] in MatPlotLib.

]]></ac:plain-text-body></ac:structured-macro>

test

test

Test

array of limits from graphical input

array of limits from graphical input

 

Code Block
axes(a1)
hold on
lims(1:2,:) = ginput(2);

axes(a2)
hold on
lims(3:4,:) = ginput(2);
Code Block
plt.axes(a1)
plt.hold(True)
limslista = plt.ginput(2)

plt.axes(a2)
plt.hold(True)

limslistb = plt.ginput(2)
limsa = np.array(limslista)
limsb = np.array(limslistb)

lims = np.hstack( [limsa, limsb] )

In MatLab, lims is an expandable array that holds limits as set by input from mouse click on the plot (ginput).
NumPy arrays cannot be expanded, so I've chosen to append to a python list first, then fill a NumPy array for the usage to look the same.

The exact usage of the lims array depends on where you place each limit. I think perhaps I've done it differently from the MatLab version.

 

 

 

filter

filter

 

Code Block
fbool1 = (channels(:,1)>min(lims(1:2,1)))&(channels(:,1)<max(lims(1:2,1)))
fbool2 = (channels(:,2)>min(lims(1:2,2)))&(channels(:,2)<max(lims(1:2,2)));
fbool = fbool1&fbool2
loglog(channels(fbool,1),channels(fbool,2),'or')

fbool3 = (channels(:,3)>min(lims(3:4,3)))&(channels(:,3)<max(lims(3:4,3)))
fbool4 = (channels(:,4)>min(lims(3:4,4)))&(channels(:,4)<max(lims(3:4,4)));
fbool = fbool3&fbool4
loglog(channels(fbool,3),channels(fbool,4),'or') 
Code Block
fbools0 = (channels[:,0]>lims[:,0].min())&(channels[:,0]<lims[:,0].max())
fbools1 = (channels[:,1]>lims[:,1].min())&(channels[:,1]<lims[:,1].max())
fbools = fbools0 & fbools1

fbools2 = (channels[:,2]>lims[:,2].min())&(channels[:,2]<lims[:,2].max())
fbools3 = (channels[:,3]>lims[:,3].min())&(channels[:,3]<lims[:,3].max())
fbools = fbools2&fbools3

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