[gdal-dev] Re: Gdal_translate, question from an amateur.

[joolek]

Hmm...  So what the following does : 
gdal_translate -scale 0 254 0 255 <input> <output>

Thank you
J

23 Oct 2011, at 19:20, "Jay L. [via OSGeo.org]" <ml-node+s1803224n6922518h34 at n2.nabble.com> wrote:

> I do not believe that a GDAL command line tool to perform that function exists.  The task is achievable using GDAL and Numpy masked arrays in python.
> 
> Perhaps someone else knows of a GDAL tool to perform this functionality though.
> 
> J
> 
> On Sun, Oct 23, 2011 at 12:59 PM, joolek <[hidden email]> wrote:
> Hi
> I need to convert all the 255 255 255 into 254 254 254. Is this possible?
> PS. Do appologize for lack of my language. 
> 
> Thanks
> J
> 
> On 23 Oct 2011, at 15:26, "Jay L. [via OSGeo.org]" <[hidden email]> wrote:
> 
>> Or are you trying to convert only some of the pixels to white?
>> 
>> On Sun, Oct 23, 2011 at 10:02 AM, Brian Case <[hidden email]> wrote:
>> joolek,
>> 
>> I noticed you used the word "strip". Are you trying to remove portions
>> of the image that are all black or white?
>> 
>> 
>> On Sun, 2011-10-23 at 03:01 -0700, joolek wrote:
>> > Basically - I have an imagery with RGB 0-255, but I would like to strip it to
>> > 1-254.
>> > So i want to get rid off two extremes (0 and 255) - is this possible?
>> > Thank you
>> > J
>> >
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