changing x axis to y and y axis to x in colorbar Object

Community matplotlib-users
1

Hi All,

i try to get a colorbar to work with:
         if not hasattr(self, 'subplot3'):
             self.subplot3 = self.figure.add_subplot(111)
             self.subplot3.grid(True)
         x,y,z = self.computehistogramm(min,min+self.maxitems)
         X,Y = meshgrid(x,y)
         plot = self.subplot3.pcolor(Y,X,z)
         self.figure.colorbar(plot)

but the x and y axis are interchanged, like this:

X

o-------------Y

But i want this:
Y

o-------------X

So how can i change this ?
the x and y data also depends on Z, so when i change x<-->y then i have
change z too ?

Any hints for me ?

As i read in the examples and in the docu this shoul be right,
     self.subplot3.pcolor(x,y,z)

But then my x and y data are wrong assigned to z, so i wrote
     self.subplot3.pcolor(y,x,z)

How to change my code so x and y are right assigned to z and i get this:
Y

o-------------X

regards Markus

2

Markus Feldmann wrote:

Hi All,

i try to get a colorbar to work with:
         if not hasattr(self, 'subplot3'):
             self.subplot3 = self.figure.add_subplot(111)
             self.subplot3.grid(True)
         x,y,z = self.computehistogramm(min,min+self.maxitems)
         X,Y = meshgrid(x,y)
         plot = self.subplot3.pcolor(Y,X,z)
         self.figure.colorbar(plot)

but the x and y axis are interchanged, like this:

X
>
o-------------Y

But i want this:
Y
>
o-------------X

So how can i change this ?
the x and y data also depends on Z, so when i change x<-->y then i have
change z too ?

I don't understand what your question has to do with the colorbar; but in anything like pcolor, if you swap X and Y, then at the same time you need to transpose Z.
http://matplotlib.sourceforge.net/api/pyplot_api.html#axes-pcolor-grid-orientation

Eric

···

Any hints for me ?

As i read in the examples and in the docu this shoul be right,
     self.subplot3.pcolor(x,y,z)

But then my x and y data are wrong assigned to z, so i wrote
     self.subplot3.pcolor(y,x,z)

How to change my code so x and y are right assigned to z and i get this:
Y
>
o-------------X

regards Markus

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