[Qgis-user] QGIS Master and Rasters to grayscale

Tue Jun 19 04:51:39 PDT 2012

You can still do that by selecting "singleband gray", and choose the
default contrast enhancement in the options.

On Tue, Jun 19, 2012 at 8:42 AM, James Stott
<James.Stott at npaconsult.co.uk>wrote:

>  This does make what was a very simple thing to do in 1.8 more time
> consuming in 1.9 doesn’t it? All I want to do is just turn it grayscale for
> display purposes. In 1.8, all I do is select grayscale from the colormap
> drop down and push OK and QGIS does it for me. Am I missing something?****
>
> ** **
>
> James ****
>
> ** **
>
>  *James Stott* BSc (Hons) MSc | Senior Professional
> *Nicholas Pearson Associates * | 30 Brock Street | Bath | BA1 2LN
> *T:* 01225 445548 | *M:* -
> *www.npaconsult.co.uk* <http://www.npaconsult.co.uk/>
>
> *From:* Marco Hugentobler [mailto:marco.hugentobler at sourcepole.ch]
> *Sent:* 19 June 2012 10:49
> *To:* James Stott
> *Cc:* qgis-user at lists.osgeo.org
>
> *Subject:* Re: [Qgis-user] QGIS Master and Rasters to grayscale****
>
> ** **
>
> >I have included links to two example jpgs to show what happens. 1.9.jpg
> shows what happens when I use the method detailed below.
>
> Is it a raster with integer values (but without color table)? In that
> case, switch the renderer type to singleband pseudo color and insert the
> color for each value.
>
> Marco
>
> Am 19.06.2012 11:18, schrieb James Stott: ****
>
> I have included links to two example jpgs to show what happens. 1.9.jpg
> shows what happens when I use the method detailed below.****
>
>  ****
>
> I would like the raster to display as in the 1.8 jpg.****
>
>  ****
>
> QGIS 1.8 https://docs.google.com/open?id=0B6r5nAOdEBZrSjhyaHdoUW9LY0U****
>
> QGIS 1.9 https://docs.google.com/open?id=0B6r5nAOdEBZrLUJ1dDNNM3BJZVE ****
>
>  ****
>
> *James Stott* BSc (Hons) MSc | Senior Professional
> *Nicholas Pearson Associates *| 30 Brock Street | Bath | BA1 2LN
> *T:* 01225 445548 | *M:* -
> *www.npaconsult.co.uk* <http://www.npaconsult.co.uk/> ****
>
> *From:* qgis-user-bounces at lists.osgeo.org [
> mailto:qgis-user-bounces at lists.osgeo.org<qgis-user-bounces at lists.osgeo.org>]
> *On Behalf Of *Marco Hugentobler
> *Sent:* 19 June 2012 09:49
> *To:* qgis-user at lists.osgeo.org
> *Subject:* Re: [Qgis-user] QGIS Master and Rasters to grayscale****
>
>  ****
>
> Hi James
>
> You may go to the raster properties, select render type singleband gray.
> Then select contrast enhancement 'stretch to min/max' and click on 'load'
> to get the min/max values from the datasource.
>
> Having this by default (options page) is not yet available with the new
> raster classes. A bugticket is already filled.
>
> Regards,
> Marco
>
> Am 19.06.2012 10:17, schrieb James Stott: ****
>
> I sometimes display my Ordnance Survey rasters  as single band gray to
> allow my data to show more clearly over the top of it.****
>
>  ****
>
> In the new master I cannot achieve the same effect. My raster goes solid
> grey.****
>
>  ****
>
> Old settings:****
>
>  ****
>
> Render as: Single Band gray****
>
> Single band properties – gray band: Band 1****
>
> Single band properties – color map: grayscale****
>
>  ****
>
> New settings:****
>
>  ****
>
> Render type: Singleband gray****
>
> Gray band: Palette****
>
> Contrast enhancement: No enhancement****
>
>  ****
>
> How do I achieve the same effect as before? The raster displays fine in
> colour, just not in grayscale. I am guessing it’s down to the new raster
> properties in master.****
>
>  ****
>
>  ****
>
> *James Stott* BSc (Hons) MSc | Senior Professional
> *Nicholas Pearson Associates *| 30 Brock Street | Bath | BA1 2LN
> *T:* 01225 445548 | *M:* -
> *www.npaconsult.co.uk* <http://www.npaconsult.co.uk/> ****
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> -- ****
>
> Dr. Marco Hugentobler****
>
> Sourcepole -  Linux & Open Source Solutions****
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> ****
>
> -- ****
>
> Dr. Marco Hugentobler****
>
> Sourcepole -  Linux & Open Source Solutions****
>
> Weberstrasse 5, CH-8004 Zürich, Switzerland****
>
> marco.hugentobler at sourcepole.ch http://www.sourcepole.ch****
>
> Technical Advisor QGIS Project Steering Committee****
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