[Qgis-user] Transparency in custom color table

[Nathan Woodrow]

If you like it and think other people might too feel free to post it.  I'm
very interested to see how people have used the alpha colour ramps.

- Nathan


On Thu, May 23, 2013 at 3:47 PM, Matt Boyd <mattslists at gmail.com> wrote:

> Thanks Nathan,
> I'm not sure maps of Oil/Gas source rock distribution would be considered
> "cool". I do like it though.
>
>
> On Thu, May 23, 2013 at 1:59 PM, Nathan Woodrow <madmanwoo at gmail.com>wrote:
>
>> It does indeed :)
>>
>> Enjoy.  If you make a cool map with it you can post it on our Flickr page
>> to show it off. http://www.flickr.com/groups/qgis/
>>
>> - Nathan
>>
>>
>> On Thu, May 23, 2013 at 1:56 PM, Matt Boyd <mattslists at gmail.com> wrote:
>>
>>> Yay,
>>> I can see 1.9 something in the osgeo4w installer (experimental). Does
>>> that have it?
>>> Thanks
>>>
>>>
>>> On Thu, May 23, 2013 at 1:51 PM, Nathan Woodrow <madmanwoo at gmail.com>wrote:
>>>
>>>> In the latest QGIS build you can now use transparency in colour ramps
>>>>
>>>> http://nathanw.net/2013/05/21/alpha-in-qgis-colour-ramps-oh-yeah/
>>>>
>>>> You would just need to make a colour ramp and change the range you need
>>>> to be transparency.
>>>>
>>>> - Nathan
>>>>
>>>>
>>>>  On Thu, May 23, 2013 at 1:48 PM, Matt Boyd <mattslists at gmail.com>wrote:
>>>>
>>>>>  Hi everyone,
>>>>> I've got a grid with a range of values, what I'd like to do is make
>>>>> everything that is above and below a certain range transparent.
>>>>>  I'm able to select white in the colour table and not entering value
>>>>> above a value seems to allow qgis to ignore that range but below that range
>>>>> it shows white.
>>>>>
>>>>> ie:
>>>>> data starts at 6000
>>>>> highest entry in color table is 2500 green
>>>>> next entry 2000 light green.
>>>>> next entry 1700 white
>>>>>
>>>>> I
>>>>>
>>>>> I'm using a linear interpolation and the values below 1700 are all
>>>>> white, I'd like them transparent.
>>>>>
>>>>> Is ti possible to enter a range of values for transparent pixels?
>>>>>
>>>>> Thanks
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Qgis-user mailing list
>>>>> Qgis-user at lists.osgeo.org
>>>>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>>>>>
>>>>>
>>>>
>>>
>>
>
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