Thank you for the reply.
I discovered this myself yesterday. Now I have an official answer if people
want a colored + or the x symbol in the scatter plot.
Scott Hansen
efiring wrote:
>
> On 03/02/2011 06:42 AM, Mr. Python wrote:
>>
>> I am unable to set the color of the scatter plot points using the code
>> below:
>>
>> import matplotlib
>> matplotlib.use('Qt4Agg')
>>
>> import matplotlib.pyplot as plt
>> import numpy as np
>>
>> plt.scatter(newSpdVals, newEngLoadVals,c='g',marker='+')
>
> This is a bug in the handling of symstyle 2, which includes '+' and 'x'.
>
>>
>> #Add the graph title and x/y axis labels
>> plt.title("Gear Span")
>> plt.xlabel("Vehicle Speed (mph)")
>> plt.ylabel("Engine Load %")
>> plt.show()
>>
>> No matter what I change the c parameter to ('b','r', etc.), the color of
>> the
>> scatter plot points are always black. The lists newSpdVals and
>> newEngLoadVals have 100 dimmensions and are of type numpy.ndarray.
>>
>> I am using the following software and hardware:
>>
>> Windows XP
>> Python 2.7
>> PyQt4 (I launch the plot from a PyQt GUI. I don't embed the plot in the
>> GUI).
>> matplotlib 1.01
>>
>> In the beginning of the same function where my scatter plot code is, I
>> added
>> the following code to verify if the problem is due to the matplotlib/PyQt
>> interface:
>>
>> a = np.linspace(-10,100,33)
>> b = np.linspace(-32,400,33)
>> plt.scatter(a, b,color='g',marker='+')
>
> Note the difference: here you are using a 'color' kwarg that is getting
> passed directly to the AsteriskPolygonCollection, whereas before you
> were using the 'c' kwarg that is being handled incorrectly in this case
> inside of the scatter code.
>
> Eric
>
>> plt.title("Gear Span")
>> plt.xlabel("Vehicle Speed (mph)")
>> plt.ylabel("Engine Load %")
>> plt.show()
>>
>> The points for this plot are colored green. I'm able to change the point
>> color to blue, red, etc.
>>
>> Any ideas why I can't change the point color of my first graph? Thank
>> you
>> for your help.
>>
>>
>
>
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What You Don't Know About Data Connectivity CAN Hurt You
This paper provides an overview of data connectivity, details
its effect on application quality, and explores various alternative
solutions. http://p.sf.net/sfu/progress-d2d
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