Ben-chin K Cha Timothy MooneyMaintained by Ben-chin Cha (email@example.com)
The complete package consists of following python modules:
MDA data process: readMDA.py mdaAscii.py plot.py Image process: view2d.py imageUtil.py tv.py Line plot program: plotAscii.py graph.py Pviewer package: pviewer.py AppShell.py ProgressBar.py matplotlib package: plot1d.py plot2d.py fit.py 3D graphic package: 3dgraph.py viewCT.py
The original readMDA.py is implemented by Tim Mooney and it provides the MDA reader routine to extract scan data from MDA files. Please refer the Functions section in readMDA.html for available routines defined in this module. The original version of mdaAscii.py is obtained from Tim Mooney, it had been extensively modified and now it supports various types of 1D/2D report generations. Please refer the Functions section in mdaAscii.html for available routines defined in this module. The plot.py is implemented by Tim Mooney which is able to display any 4 detector array from the current scan record specified by user. Please refer the python applications for beamline control implemented by Tim Mooney for details.
The multi-line plot package plotAscii.py is based on the graph classes from graph.py which is extracted and modified from Grayson's book. It accepts Ascii text file on the command line, and also provides simple widgets to let user easily tailor the final multi-line plot. Please refer the Functions section in plotAscii.html for available routines defined in this module.
The 2D image features in imageUtil.py and view2d.py are developed based on the Image classes from the Python Image Library. It provides easy to use routines to display scientific data or any picture files. Please refer the Functions section in imageUtil.html and view2d.html for examples on image processing routines.
On top of common shared routines, the pviewer is designed with the goal that it provide flexible user interface to access ASCII/MDA data and display 1D/2D data graphically. It also provide convenient menu to access any system command and to access IDLVM scan tools like scanSee / catcher / mca supported by BCDA.
The GUI in pviewer.py is implemented based on the basic classes AppShell and ProgressBar developped by John E. Grayson from the book of Python and Tkinter Programming (Ref.1). It integrates the multi-line plots, image processing, MDA reader, MDA report generation all into one system. So user can access and display any 1D/2D data array from ASCII or MDA files.
The GUI tv.py program can display any picture file or display any real ASCII 2D data array as image with a set of user selectable color tables. It is built from the imageUtil.py and the scrapbook class extracted and modified from Grayson's book. Please refer tv.html for more information about this program.
Currently the complete set of programs had been successfully tested on both UNIX, LINUX and WIN system.
Tkinter - Tk interface library Pmw - python mega widget library PIL - python image library Numeric - python numeric package
source ~cha/setup_pythonThe contents of ~cha/setup_python is given below:
setenv PYTHONSTARTUP /home/oxygen/CHA/epics/extensions/lang/python setenv PYTHONPATH .:/opt/local/lib:/home/oxygen/CHA/epics/extensions/lang/python:/home/oxygen/CHA/epics/extensions/lib/solaris-sparc set path=(~cha/epics/extensions/bin/solaris-sparc ~cha/epics/extensions/lang/python $path)
pythonNormally exit python program by entering CNTL-D at the python prompt >>>. Python session may also be aborted by entering CNTL-\ at the python prompt >>> in this case a core file will be created.
from readMDA import * d = pickMDA()
from readMDA import * d = readMDA('/home/beams/CHA/data/xxx/cha_0001.mda')
mdaAscii_1D - generate report from multi-detector 1D array mdaAscii_2D - generate seperate 2D report for each defined detector mdaAscii_2D1D - generate 1D report from multi-detector 2D image array mdaAscii_IGOR - generate all detector 2D images in a single IGOR file mdaAscii_all - automatically generate 1D/2D ascii reports for each mda file from the specified mda data directory pathPlease refer the Functions section in mdatAscii.html for informaion of routine command syntax.
For an example of generating separate 2D ASCII image report for every defined detector found in a 2D/3D MDA scan file.
from mdaAscii import * d = readMDA(filename) fn = mdaAscii_2D(d)
For an example of generating 2D images of all defined detectors found in a 2D/3D MDA scan file as a single IGOR file.
from mdaAscii import * d = readMDA(filename) fn = mdaAscii_IGOR(d)
plotAscii.py ASCII/cha_0015.1d.txt 0For the case there is no X column defined in the text file -1 instead of 0 should be used. The plotAscii.py is a GUI program, by default it plots the first two curves. After modify the plot by Symbol, Legend, Toggle buttons, and Title... widgets, the final plot is show below.
# pts.txt Example of row oriented scattering text data # line 1 1. 2. 3. 4. 5. 1. 4. 9. 15. 25. # line 2 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20.To pass 'pts.txt' to plotAscii.py on the Unix system:
plotAscii.py pts.txtThe plot result with symbol is given below:
SH - shared dictionary use to set printer, X column, etc pvs - shared text file holds the list of legends *.txt - any 1D/2D text data file
Data... - scroll text window to display data columns Transpose... - transpose row data into column data and saved in '1.txt' and submit a new plotAscii.py with the transposed file Legend... - dialog to modify legend for data column LegendLoc... - dialog to set relative legend location on plot XRange... - dialog to set X range of start/end points for plot Symbol - check button for plot symbol on or off Legend - check button for plot legend on or off Graph - plot drawing area CB group - check buttons for marking plotted curves All On - plot all curves All Off - none curve selected Clear - Clear plot area Redraw - redraw the plot area Printer... - dialog to set printer Print - send the plot to printer Title... - dialog to change plot title, xtitle Quit - exit the plotAscii program
from imageUtil import * ct = readCT(i) # i specify color table sequence numberThe list of color table defined in CT is given below:
Seq# Color Table Description ----------------------------------- 0 B-W LINEAR 1 BLUE/WHITE 2 GRN-RED-BLU-WHT 3 RED TEMPERATURE 4 BLUE/GREEN/RED/YELLOW 5 STD GAMMA-II 6 PRISM 7 RED-PURPLE 8 GREEN/WHITE LINEAR 9 GRN/WHT EXPONENTIAL 10 GREEN-PINK 11 BLUE-RED 12 16-LEVEL 13 RAINBOW 14 STEPS 15 STERN SPECIAL 16 Haze 17 Blue-Pastel-Red 18 Pastels 19 Hue Sat Lightness1 20 Hue Sat Lightness2 21 Hue Sat Value 1 22 Hue Sat Value 2 23 Purple-Red + Stripes 24 Beach 25 Mac Style 26 Eos A 27 Eos B 28 Hardcandy 29 Nature 30 Ocean 31 Peppermint 32 Plasma 33 Blue-Red 34 Rainbow 35 Blue Waves 36 Volcano 37 Waves 38 Rainbow18 39 Rainbow + white 40 Rainbow + blackAt the end of readCT(), the temporary file 'pal.dat' will be updated to hold the current color table picked by user. The image data displayed will be scaled with the color table picked by user.
from plotAscii import readArray from imageUtil import * ct = readCT() # load rainbow+white color table da = readArray('ASCII/2idd_0087.D12.txt') im = display2D(da,1)
ct = readCT(3) # load red temperature color table im = display2D(da,1)
Example of extracting a 2D image from an MDA 2D scan file.
from view2d import * file ='/home/beams/CHA/Yorick/data/2idd_0087.mda' ct = readCT() # load the rainbow+white(40th) color table # ct = readCT(0) load black/white color table d = panMDA(file) # readMDA and pan all images
from view2d import * file ='/home/beams/CHA/Yorick/data/2idd_0087.mda' d = readMDA(file) pick2d(d,14,updown=1) # plot the 15th image upside down
To access the python program pviewer.py on the Unix system, at Unix prompt just enter
pviewer.config - configuration file saved for easy restart SH - shared dictionary use by pviewer package CT - master array for 41 color tables pal.dat - extracted current color table pvs - text file holds list of legends for multi-line plot *.ppm,*gif,*png- various intermediate image files created *.txt - various text file created by report menu *.mda - IOC autosaved MDA scan files
The report generation features will create various type of 1D/2D reports under the sub-directory ASCII in the current working directory. User must have the write permission at the startup directory in order to be able to run this program.
Various dialogs for setting X,Y range or name legend are available for freely tailoring the graphic output.
File Menu Quit Save 'pviewer.config' file and exit the pviewer application Printer... Dialog to set up printer and update shared file SH Open Ascii... Select the desired ASCII file and display the text content in the scrolled main window Open MDA... Select the desired MDA file and display the defined detectors info in the main scrolled window Setup Munu Color Table... Dialog to display and select the desired color table, default is item 39 Rainbow + white, temporary file 'pal.dat' is used to store the selected color table Name Legend... Dialog to modify the legend name to be used in multi-line plot. Image Upside Down Checkbutton to plot image upside down MDAView Menu Multi-line 1D Plot... Display MDA 1D report in main scrolled text window area and pass it to 'plotAscii.py' sub-program PanImages... Pass MDA 2D image array to panimage plotter Pick Di Image... Dialog to pick detector and pass image to plot2d routine MDAReports Menu MDA 1D/2D Report... Generate MDA 1D/2D Ascii reports according to defined scan and detectors and display the last generated file in the main scrolled text window MDA 2D->1D Report... Generate sequential MDA 1D Ascii report from 2D data array and display the last generated file in the main scrolled text window Generate All Report... Generate all 1D/2D reports for every MDA file found in the current MDA data directory MDA to IGOR Report... Generate MDA 2D image report in IGOR format and display the file in main scrolled text window View ASCII Report... Dialog to select report file and pop up text window to display selected Ascii file Remove All Report... Dialog to remove all text file from current ASCII directory AsciiView Menu Multi-line Plotter.. Pass the Ascii data to multi-line plot program plotAscii.py Extract & Modify Legend... Dialog to extract legend from comment line if defined in Ascii file TV Image ... Display data as 300x300 colored scaled TV image Ascii2Image Menu Plot2D... Pass 2D data directly to plot2d program X,Y Range for image... Dialog set X,Y range and pass X,Y,Data to plot2d program X,Y Line vector from mdaAscii file... Extracted X,Y vector from comment lines from image text file generated by pviewer and pass X,Y,Data to plot2d program Extract X,Y,DATA from scanSee Ascii file... Extract X column, Y row, Data row & column from scanSee/catcher/yviewer generated image file and pass X,Y,Data to plot2d program ScanTools Menu Python plot.py ... Run python program plot.py implemented by Tim Mooney idlvm sscan ... Run scanSee program for IDLVM 6.0 idlvm catcher ... Run catcher program for IDLVM 6.0 idlvm mca ... Run MCA program for IDLVM 6.0 Tools Menu start_epics ... Run the start_epics script Command Dialog... Dialog for entering any valid system command or tools Help Menu About... Show pviewer program info Balloon Help Toggle balloon help on or off pviewer_help.txt... Show this on-line help message Message Bar Area: Balloon Message Area Progress Bar Area
SH - shared dictionary use by pviewer package CT - master array for 41 color tables pal.dat - extracted current color table *.ppm,*gif,*png- various intermediate image files created *.txt - various text file created by report menu
File Menu Open Ascii Data... - dialog to select 2D data file and display Picture Files... - pop up picture browser dialog Printer... - dialog to override default printer Print - send image to PS printer Close - exit the program Setup Menu Test indgen([30,20]) - display test data indgen([30,20]) as image Color Table... - dialog to change color table to be used Transpose Data Array - display the transposed data array Flip image Upside/Down - flip and display image upside/down Flip image Left/Right - flip and display image left/right Help Menu About... - pop up program info Booloon help - check button for booloon help Drawing Area - 300x300 pixel image display area Save As: 1.png - field to specify the output picture file name to be saved, default 1.png Raw Data - check button display image as raw data size, default 300x300 pixels Command Area: Save Image - save the image to the output picture file Close - exit the program Message Bar Area: Booloon Message Area Progress Bar Area
Please refer the tv.html for more information about tv.py.