Image Graph not updating on base data load and overwrite

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Fri, 11/12/2021 - 01:00 pm

Hi,

I have an image analysis experiment and as part of the automation scheme, I have a singular wave that holds the image and when I load a new image that wave gets overwritten to preserve the wave name in the procedure.

So I have wave cleverly called image and have it displayed in a graph window.  I then load a new wave, manually at present, and select the same name and highlight the overwrite checkbox.  The image loads but the display of the image still retains the previous input.  I run a function that calls that wave and does some functions and returns some data.  After that has run, the display in the original graph now shows the newly loaded data.

function ImageMark(wave imagein)

    Variable num_pads,index,pointcount
    //Find the roi of for background and for pad arrays
    //fill in gaps between
    NewdataFolder/O/S Temp
    ImageMorphology /i=5/E=5 Erosion imagein
    Wave IM = M_ImageMorph
    Wave M_imagethresh
    //generate a background curve
    Extract/FREE imagein, Backgroundtemp, M_imagethresh==255
    Make/O/N=256 background
    histogram/CUM/B=2 backgroundtemp,background
    pointcount=numpnts(Backgroundtemp)
    background /=pointcount
   
   
    find_Pads_stats(IM)
    //Find Pad Centers
    wave W_xmax,w_xmin,W_ymax,W_ymin
    num_pads=numpnts(W_xmax)
    make/O/N=(num_pads,2) centers
    setlabels("x;y",centers,1)
    centers[][%x]=(w_xmax[p]+w_xmin[p])/2
    centers[][%y]=(w_ymax[p]+w_ymin[p])/2
    for(index=0;index<num_pads;index+=1)
        find_pads_mark(IM,centers[index][%x],centers[index][%y])
        wave M_particlemarker
        Extract imagein, padtemp, M_particlemarker==0
        make/O/N=256 $("pad_"+num2str(index))
        wave pad=$("pad_"+num2str(index))
        histogram/CUM/B=2 padtemp,pad
        pointcount=numpnts(padtemp)
        pad /=pointcount

    endfor
    setdataFolder root:
end

It was my understanding that the original graph would have been updated automatically to reflect the new underlying upon load.  Am I mistaken?  I am using IP Version: 9.00 (Build 37840) on a Mac OS X 11.6 (Big Sur).  The example in the image shows the effect.  I have loaded new data and you can see it in the preview pane in data browser.  The large graph with is displaying that same wave, but it has the data from the previous wave.

Andy

 example image

Andy,

It is difficult to tell you what is going on other than starting from the observation that some of the displayed waves belong to the private data folder (you should make copies elsewhere).  It is also possible that you are displaying an image of a wave that is in the private data folder.  In general, it is clear which wave is displayed in the Data Browser while it may not be obvious about graph windows.

 

AG

November 12, 2021 at 02:08 pm - Permalink

Doesn't that just look like that ImageLoad does not mark existing waves as modified when it has written into it?

November 12, 2021 at 02:47 pm - Permalink

Hi,

Here is the window recreation macro for the graph.  Pretty simple stuff.  It is pullng waves from two places the root where the image is and the temp folder I create for organizational neatness.

Window Graph0() : Graph
    PauseUpdate; Silent 1       // building window...
    String fldrSav0= GetDataFolder(1)
    SetDataFolder root:Temp:
    Display /W=(689,53,1949,1109)/T W_BoundaryY vs W_BoundaryX
    AppendImage/T ::image
    ModifyImage image ctab= {*,*,Grays,0}
    SetDataFolder fldrSav0
    ModifyGraph margin(left)=14,margin(bottom)=14,margin(top)=14,margin(right)=14
    ModifyGraph mirror=2
    ModifyGraph nticks(left)=19,nticks(top)=22
    ModifyGraph minor=1
    ModifyGraph fSize=9
    ModifyGraph standoff=0
    ModifyGraph tkLblRot(left)=90
    ModifyGraph btLen=3
    ModifyGraph tlOffset=-2
    SetAxis/A/R left
EndMacro

Andy

November 12, 2021 at 03:22 pm - Permalink

It seems that Thomas is correct; the RPNG is not marking the wave as modified.  A simple workaround for Andy is to execute a DoUpdate after loading the new image.  This will be fixed for the next build.

 

AG

November 12, 2021 at 03:47 pm - Permalink

Andy,

Right.  DoUpdate checks to see if the wave is marked as modified.  Have you tried the nightly build?

 

AG

November 13, 2021 at 04:16 pm - Permalink