loop of exportgraphics fails for dot indexing only in the second loop

Hello guys, how are you?

I got a piece of my code which meant to show and export a histogeram automatutically. it works somewhy for the first indice, but then it fails. i saw several posts about this problem, which talked about handle (which I don't use anyways) and critical failure of indexing (which I belive it is not in my case).

the code:

for n=1:length(allcellsnames)
    subplot(1,3,n)    
    histogram(allcellsareastot{1,n});
    myAxes=findobj(finalhis,'Type','Axes');
    fnfh=append(append(erase(lastentryname, '.csv'),' finalhis'));
    fhpath=(append(pwd ,append('\',append('summary figure', append('\',append('summary figure ', append(num2str(minint(n)), append(' i ', append(num2str(maxint(n)), '.png')))))))))
    exportgraphics(myAxes,(fhpath));
    
    analysisdata{9+n,1}=allcellsnames{n};
    analysisdata{9+n,2}=allcellsareastot{1,n};
end

The first indice goes good and it saves my image. in the second it subplots it to the figure, but somewhy fails to save.

it fails in the " exportgraphics(myAxes,(fhpath));"

here is the output that shows the first is fine, but the second messed up:

fhpath =

'C:\Users\Ifrac\Desktop\מעבדה\matlab\Voronoi analysis\voronoi code test\summary figure\summary figure 0.5 i 40.png'


fhpath =

'C:\Users\Ifrac\Desktop\מעבדה\matlab\Voronoi analysis\voronoi code test\summary figure\summary figure 1 i 45.png'

Error using exportgraphics
Dot indexing is not supported for variables of this type.

Error in Voronoi_exclude_borders_21122022allclareamatrixndfx (line 378)
exportgraphics(myAxes,(fhpath));

I would really appriciate any help :)

Thanks,

Amit.

[Stephen23]

What is FINALHIS ?

Note that you do not need to call APPEND() multple times in one line like that: APPEND() accepts multiple inputs, so you only need to call it once. Even better would be to replace it with FULLFILE() and SPRINTF().

[Amit Ifrach]

Hi sephen, thanks!

finalhis is the figure:

finalhis=figure(ADcntr);  

and thanks for the append tip! :)

Amit.

Answer 1

[Sulaymon Eshkabilov]

As you stated: finalhis=figure(ADcntr);

Then this command: exportgraphics(myAxes,(fhpath));

has to be:

exportgraphics(finlhis,fhpath);

[Amit Ifrach]

Hi Sulaymon (suliman?)!

Thanks, it worked! can you explain me what was wrong?

Thanks,

Amit.

[Sulaymon Eshkabilov]

Welcome. It requires a figure handle and thus, you'd need such syntax.

[Walter Roberson]

exportgraphics(OBJ, FILESPEC) saves the specified graphics to a file.

OBJ is the handle of any type of an axes, a figure, a chart that can

be a child of the figure, a tiled chart layout, or a container within

the figure.

Answer 2

[Walter Roberson]

try

    myAxes = subplot(1,3,n);    
    histogram(myAxes, allcellsareastot{1,n});

with no find()

[Amit Ifrach]

Hi walter, how are you?

Thanks for the help. the code give an error:

Error using exportgraphics
Additional, unrecognized inputs were specified.

Error in Voronoi_exclude_borders_23122022 (line 378)
    exportgraphics(myAxes,(allcellsareastot{1,n}));

[Walter Roberson]

I do not know where you got the idea that allcellsareastot was to be passed to exportgraphics.

for n=1:length(allcellsnames)
    myAxes = subplot(1,3,n);
    histogram(myAxes, allcellsareastot{1,n});
    fnfh=append(append(erase(lastentryname, '.csv'),' finalhis'));
    fhpath=(append(pwd ,append('\',append('summary figure', append('\',append('summary figure ', append(num2str(minint(n)), append(' i ', append(num2str(maxint(n)), '.png')))))))))
    exportgraphics(myAxes,(fhpath));
    
    analysisdata{9+n,1}=allcellsnames{n};
    analysisdata{9+n,2}=allcellsareastot{1,n};
end

[Walter Roberson]

By the way, we recommend that you use fullfile() instead of building file names with '/' or '\' yourself.