[Qgis-user] colorramp starting from white

[David Greenewalt]

The ramps that go from white to color (just 2 colors - for example 
white/green) have more stops than needed. I would just delete the 
intermediate stops and set the first to the pale green of your choice.  
Then save your new color ramp for future use.

For maximum contrast between high and low data values, you could leave 
it as white/green and then set the screen/page background color to 
something other than the default white.  Go to Project-Properties and 
then Background Color.

David



On 6/15/2020 10:50 AM, Seggie, Graeme wrote:
> Would adapting and using this code help at all?
>
> https://gis.stackexchange.com/questions/134435/what-is-replacement-for-setcolorshadingalgorithm-in-qgis-2-6/134589#134589
>
> Graeme
>
>
>
> -----Original Message-----
> From: Qgis-user <qgis-user-bounces at lists.osgeo.org> On Behalf Of Raymond Nijssen
> Sent: 15 June 2020 15:34
> To: DelazJ <delazj at gmail.com>
> Cc: qgis-user <qgis-user at lists.osgeo.org>
> Subject: Re: [Qgis-user] colorramp starting from white
>
> Attached is an example image.
>
> Currently it is very hard to distinguish lakes from areas in the lowest class, for example in the southwest area.
>
> In the map at the right, I manually adjusted the color ramp to start at a light green color. Should that be the default?
>
> Raymond
>
>
>
> On 15-06-2020 16:04, DelazJ wrote:
>> Hi Raymond,
>>
>> Instead of changing manually, why not "Invert the Color ramp" when
>> applying it?
>> https://docs.qgis.org/testing/en/docs/user_manual/introduction/general
>> _tools.html#the-color-ramp-drop-down-shortcut
>>
>> Regards,
>> Harrissou
>>
>> Le lun. 15 juin 2020 à 15:53, Raymond Nijssen <r.nijssen at terglobo.nl
>> <mailto:r.nijssen at terglobo.nl>> a écrit :
>>
>>      Am I the only one who would like the color ramps in QGIS to NOT start
>>      from (super nearly) white, but from a light version of the color?
>>
>>      For example, "Reds" should go from (light) pink to red.
>>
>>      Currently, the first class in my legend always looks white, as many
>>      other parts of my map often do. Therefore it is hard to see where my
>>      data is and where not.
>>
>>      Another thing, changing it manually is hard because of the 7 stops in
>>      the ramps.
>>
>>      I'm happy to figure this out and make a PR, but would like to know
>>      other's opinions first.
>>
>>      Regards,
>>      Raymond
>>
>>
>>      --
>>      Terglobo
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