Re: [Matplotlib-users] Problems with imshow logarithmic plot

[John [H2O] <was...@gm...>]

Well, the image is being plotted using:
## create logorithmic scale
range_max = int(pl.ceil(dat_max))
step = int(pl.ceil(range_max/10)) 
logspace = 10.**np.linspace(-1, 4.0, 20)   # 50 equally-spaced-in-log points
between 1.e-01 and 1.0e03
#plot#
im =
m.imshow(topodat,cmap=cm.s3pcpn,interpolation='nearest',vmin=dat_min,vmax=dat_max+(0.1*(dat_min-dat_max)))

The it is the 'Data Max' text that is of concern. Notice it does not equal
the max color according to the scale... the scatter point itself is not of
issue.

-john



Michael Droettboom-3 wrote:
> 
> The image is being plot in linear scale, while the scatter point is 
> being plotted with log scale...?
> 
> John [H2O] wrote:
>> I should add here also, this doesn't explain for me why the values are
>> different?? Thoughts on that mtter?
>>
>> Thanks!!
>>
>>
>>   
> 
> -- 
> Michael Droettboom
> Science Software Branch
> Operations and Engineering Division
> Space Telescope Science Institute
> Operated by AURA for NASA
> 
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