Saving plot with variables larger than 2 GB
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Yaser Khojah
il 26 Feb 2019
Commentato: Yaser Khojah
il 1 Mar 2019
I'm trying to save a huge boxplot figure but it is working. I used matfile and it is not saving yet. Any idea?
for i = 1:length(s)
subplot(4,5,i);
filename = (['MC Case (' num2str(i) ') .mat']);
m = matfile(filename);
Demand = m.Demand;
Supply_M = m.Supply_M;
Case = m.Case;
demand = Demand / 365;
supply_M = Supply_M / 365;
BoxPlotFunction(demand,supply_M,Case)
end
savefig('BoxPlot');
3 Commenti
Walter Roberson
il 1 Mar 2019
Modificato: Walter Roberson
il 1 Mar 2019
Your matfile is only used for reading in data, not for saving data. The saving is being done only by the savefig()
Using the compact option for savefig can help with speed.
Risposta accettata
Walter Roberson
il 1 Mar 2019
Modificato: Walter Roberson
il 1 Mar 2019
If you get an error message about file being corrupt when you savefig, then:
Before doing the savefig(), go into your Preferences -> General -> MAT-Files and select "MATLAB Version 7.3 or later". Then do the savefig(). You might as well specify the compact option as the last parameter since your use of matfile tells us that you do not need big backwards compatibility. The figure saving that is done internally will use the -v7.3 format instead of the -v7 format.
Più risposte (1)
Munish Raj
il 1 Mar 2019
Hello Yaser,
The mat file has to be loaded onto the workspace to perform operations on it.
This can be done by using the load command.
load filename
After this is done, you can access those variables the same way you would access any other variable in the workspace.
Your Code will then transalate to
for i = 1:length(s)
subplot(4,5,i);
filename = (['MC Case (' num2str(i) ') .mat']);
load filename
demand = Demand / 365;
supply_M = Supply_M / 365;
BoxPlotFunction(demand,supply_M,Case)
end
savefig('BoxPlot');
2 Commenti
Walter Roberson
il 1 Mar 2019
I doubt this is the issue.
savefig() uses save() internally. If your preferences are set to use -v7 then MATLAB will try to use -v7 when it does the save(), which will fail if any object to be saved is more than 2 gigabytes. If your preferences are set to use -v7.3 then MATLAB will use that for the save() .
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