matplotlib-users

[Matplotlib-users] Work directory is changed when saving a plot

[Søren N. <sor...@gm...>]

Hi,

When I save a plot using the toolbar save function, and I save to a
different directory than the one where my program is, my program can no
longer locate the icons (used in my GUI) that I am using in my .\ressources
directory. So saving the plot changed the working directory of my program?

How do I change it back? Isn't this an error in matplotlib?

Thanks
Soren

Re: [Matplotlib-users] Work directory is changed when saving a plot

[Michael D. <md...@st...>]

Which backend are you using?  I don't see any explicit calls to chdir in 
matplotlib that would make this happen.  It would certainly be 
unintentional if it is.

Mike

Søren Nielsen wrote:
> Hi,
>
> When I save a plot using the toolbar save function, and I save to a 
> different directory than the one where my program is, my program can 
> no longer locate the icons (used in my GUI) that I am using in my 
> .\ressources directory. So saving the plot changed the working 
> directory of my program?
>
> How do I change it back? Isn't this an error in matplotlib?
>
> Thanks
> Soren
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Re: [Matplotlib-users] Work directory is changed when saving a plot

[Christopher B. <Chr...@no...>]

Michael Droettboom wrote:
> Which backend are you using?  I don't see any explicit calls to chdir in 
> matplotlib that would make this happen.  It would certainly be 
> unintentional if it is.

I don't know about any other back-ends, but the wx FileDialog has an 
option to change the working dir when the user selects a file I also 
don't know if this flag is set in the MPL code, but it shouldn't be.


> Søren Nielsen wrote:
>> my program can 
>> no longer locate the icons (used in my GUI) that I am using in my 
>> .\ressources directory. So saving the plot changed the working 
>> directory of my program?

>> How do I change it back? Isn't this an error in matplotlib?

I'd say yes, but it's also an error in the design of your code -- as 
you've discovered, the working dir is a tenuous concept -- you should 
set that resources dir in your code start-up and keep it around for when 
you need it.

wxPython has wx.StandardPaths which can be helpful for finding your aps 
data, etc -- I'm sure the other toolkits have something, too.

-Chris



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