Re: Transparent Background

Thanks Kyle. That did it.

'-background white' by itself didn't work, but it did if I followed it with
'-flatten'. '-alpha off' worked too, but it seemed to distort the image.

    Carl

On Wed, Mar 28, 2012 at 12:41 PM, Kyle Griffin <kgriffin@atmos.albany.edu>wrote:

> Hi Carl,
>
> This may have to do with the order in which the background is assigned.
> Although I haven't tried it, you may want to put the '-background white'
> before the flatten command.
>
> If that doesn't work, ImageMagick has an '-alpha off' setting as well,
> which does work on removing transparency for me.
>
>
> Kyle
> -----------------------------------------------------
> Kyle S. Griffin
> Dept. of Atmospheric and Environmental Sciences
> University at Albany, SUNY
> 1400 Washington Ave, Albany, NY 12222
> Office: ES-218 Email: kgriffin@atmos.albany.edu
> http://www.atmos.albany.edu/student/kgriffin/
>
>
>
> On Wed, Mar 28, 2012 at 12:34 PM, Carl Schreck <carl@cicsnc.org> wrote:
>
>> No change. Thanks for the suggestion though...
>>
>> Carl
>>
>> On Wed, Mar 28, 2012 at 12:17 PM, Dennis Shea <shea@ucar.edu> wrote:
>>
>>> Yes ... ImageMagick did chane something. Try
>>>
>>> convert -flatten -trim +repage -density 150 -background white genisis.psgenisis.png
>>>
>>> Good Luck
>>>
>>>
>>> On 3/28/12 10:08 AM, Carl Schreck wrote:
>>>
>>>> I recently had to upgrade imageMagick to the latest version, and I've
>>>> been having some strange results converting NCL-made eps files to png.
>>>> See the attached file. It looks almost ok, but the background is
>>>> transparent instead of white. It doesn't show up in this example, but if
>>>> I had done shaded contours, that shading would be white. Anything
>>>> outside of the plot would still be transparent though.
>>>>
>>>> This could probably be addressed on either the NCL side or the
>>>> imageMagick side, but I'm stumped on both sides. Any suggestions?
>>>>
>>>> I am using imageMagick 6.7.6 and NCL 6.0.0. I do the conversion as
>>>> "convert -trim +repage -density 150 genesis.eps genesis.png"
>>>>
>>>> My .hluresfile has these lines:
>>>> ! White background/black foreground
>>>> *wkForegroundColor : (/0.,0.,0./)
>>>> *wkBackgroundColor : (/1.,1.,1./)
>>>>
>>>> Thanks!
>>>> Carl
>>>>
>>>> --
>>>> Carl J. Schreck III, PhD
>>>> Postdoctoral Research Associate
>>>> Cooperative Institute for Climate and Satellites (CICS-NC)
>>>> North Carolina State University and NOAA's National Climatic Data Center
>>>> 151 Patton Avenue
>>>> Asheville, NC 28801
>>>> Tel: 828-257-3140
>>>> carl@cicsnc.org <mailto:carl@cicsnc.org>
>>>> http://monitor.cicsnc.org/mjo/
>>>> http://www.atmos.albany.edu/**student/carl/<http://www.atmos.albany.edu/student/carl/>
>>>>
>>>>
>>>>
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>>>
>>
>>
>> --
>> Carl J. Schreck III, PhD
>> Postdoctoral Research Associate
>> Cooperative Institute for Climate and Satellites (CICS-NC)
>> North Carolina State University and NOAA's National Climatic Data Center
>> 151 Patton Avenue
>> Asheville, NC 28801
>> Tel: 828-257-3140
>> carl@cicsnc.org
>> http://monitor.cicsnc.org/mjo/
>> http://www.atmos.albany.edu/student/carl/
>>
>>
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>>
>

-- 
Carl J. Schreck III, PhD
Postdoctoral Research Associate
Cooperative Institute for Climate and Satellites (CICS-NC)
North Carolina State University and NOAA's National Climatic Data Center
151 Patton Avenue
Asheville, NC 28801
Tel: 828-257-3140
carl@cicsnc.org
http://monitor.cicsnc.org/mjo/
http://www.atmos.albany.edu/student/carl/

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Received on Wed Mar 28 10:48:31 2012