Re: [Matplotlib-users] symlog linear to log transition plot position?

[David Erickson]

On 5/1/2012 5:41 AM, Benjamin Root wrote:


On Tue, May 1, 2012 at 6:42 AM, David Erickson <deric...@stanford.edu 
<mailto:deric...@stanford.edu>> wrote:

    Hi I need to use the symlog yscale in my graph, I have a lot of data
    that needs to be displayed linearly, with a small fraction at the
    upper
    end of the range that needs to be displayed in log scale due to its
    distance from the main data.  The symlog scale works great,
    however I'd
    like to adjust the actual vertical graph position where it crosses
    from
    linear to log (not the threshold), because right now only ~25% of
    the y
    space is being given to linear, and I'd like it to be more like
    80%.  Is
    this possible?

    Thanks!
    David


Isn't linthreshy what you are looking for?  It denotes the range where 
the scale is linear.  So, if it is 25, then from -25 to 25 the scale 
will be linear.  After 25, it will be log.

Maybe I am missing something in your description?

Cheers!
Ben Root


Hi Ben,
No unfortunately linthreshy only controls the crossover point from 
linear to log scale, it does not give you control over where this occurs 
on the figure's y coordinates.  I've attached a picture to explain, 
currently the linear part of the graph is only being given around 25% of 
the vertical space, I'd like to reverse that and give linear ~75% and 
log at the top only the remaining 25%.  Is this possible?  I've been 
digging around in the SymmetricalLogScale and SymmetricalLogLocator 
classes and can't even tell how this range is allocated.

Thanks in advance!!
-David
<<attachment: symlog.png>>------------------------------------------------------------------------------
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