Re: Getting Started examples: color settings

From: Mary Haley <haley_at_nyahnyahspammersnyahnyah>
Date: Wed, 24 Jun 2009 10:59:04 -0600 (MDT)

On Wed, 24 Jun 2009, B N wrote:

> Mary.
> Thank you. By the way does this type of question fall under the
> ncl-install listserve? I didn't know or I would have posted there.

You did the right thing by posting to ncl-talk. This was more of a
usage question than an installation question. Thanks for your concern,

> I looked at my .hluresfile and its an exact copy as the .hluresfile
> from the NCL
> page.
> My setting for "wkColorMap" is
> *wkColorMap : rainbow+gray
> But ....
> I just commented out this line with a "!"
> !*wkColorMap : rainbow+gray
> and now I am getting the right colors, the default colormap, when I do
> example 2. This seems backwards. Should this line be commented out by
> default? I didn't change my colormap settings anywhere else.
> Sincerely,
> Bold

You are probably right, this line should be commented out by default.
I think it wasn't because the default color map really is not
appropriate for anything other than black-and-white plots.

The gsn_xxxx examples were created a long time ago, before we
even started suggesting that people download the ".hluresfile".


> On Wed, Jun 24, 2009 at 11:08 AM, Mary Haley<> wrote:
>> Hi Bold,
>> This example uses the default colormap (not a very good one for contours).
>> What would cause these differences, then, is if you are changing your color
>> map.
>> The picture you're getting is definitely from using a different color map.
>> If your .hluresfile has a setting for "wkColorMap", then this is what's
>> causing your color map to look different. Even though this file is in your
>> home directory, it gets loaded no matter where you run NCL from.
>> This is the point of the .hluresfile.
>> To get the color map like the one in the example, you would either
>> need to remove or comment out the "wkColorMap" setting in
>> your .hluresfile, or else change the color map in example 2 with:
>>  xwks = gsn_open_wks("x11","gsun02n")      ; Open an X11 workstation.
>>  gsn_define_colormap(xwks,"default")
>> --Mary
>> On Jun 24, 2009, at 4:32 AM, B N wrote:
>>> Hi. While running the 2nd example script in the "Getting Started"
>>> section of the NCL website,
>>> I noticed that my color plots look nothing like the examples. I have
>>> attached an image of the plot I am getting ("Picture 34", all purple
>>> and black) and then an image of the image I am supposed to get
>>> ("Picture 35", from the NCL web site). (By the way, I'm getting the
>>> correct B&W examples.)
>>> What could be causing this difference in the color plots?
>>> I don't think that this has anything to do with the .hluresfile
>>> because I have this in my home directory.
>>> Will this cause problems later on?
>>> Thank you for helping the newbie.
>>> -Bold<Picture 34.png><Picture
>>> 35.png>_______________________________________________
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Received on Wed Jun 24 2009 - 10:59:04 MDT

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