[Qgis-user] QGIS Master and Rasters to grayscale

[James Stott]

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

This just turns the raster into 1 gray colour: 127, 127, 127

> can you share a bit sample of your raster?

Technically I don’t think I supposed to share the data as it is Ordnance Survey data. 

I have included the metadata below if this helps:

Driver:
GDAL provider
VRT
Virtual Raster
Dataset Description
N:\Projects\10499 BP\Reference\Base Mapping\Raster\10000\OS 10000.vrt
Band 1
STATISTICS_MAXIMUM=9
STATISTICS_MEAN=3.2746921074487
STATISTICS_MINIMUM=0
STATISTICS_STDDEV=3.9133672791329
Dimensions:
X: 39370 Y: 31496 Bands: 1 
Origin:
385000,95000
Pixel Size:
0.635001,-0.635001
No Data Value
-32768 
Data Type:
GDT_Byte - Eight bit unsigned integer
Pyramid overviews:
Layer Spatial Reference System: 
+proj=tmerc +lat_0=49 +lon_0=-2 +k=0.9996012717 +x_0=400000 +y_0=-100000 +ellps=airy +towgs84=375,-111,431,0,0,0,0 +units=m +no_defs
Layer Extent (layer original source projection): 
385000.0000000000000000,75000.0000000000000000 : 410000.0000000000000000,95000.0000000000000000
Band
Band 1
Band No
1
No Stats
No stats collected yet


James Stott BSc (Hons) MSc | Senior Professional
Nicholas Pearson Associates | 30 Brock Street | Bath | BA1 2LN
T: 01225 445548 | M: -
http://www.npaconsult.co.uk/ 

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From: qgis-user-bounces at lists.osgeo.org [mailto:qgis-user-bounces at lists.osgeo.org] On Behalf Of Salvatore Larosa
Sent: 19 June 2012 13:02
To: qgis-user at lists.osgeo.org
Subject: Re: [Qgis-user] QGIS Master and Rasters to grayscale

Il giorno mar, 19/06/2012 alle 12.42 +0100, James Stott ha scritto:
> 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?

Hi James,
can you share a bit sample of your raster?

Regards,

-SL


--
Salvatore Larosa
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skype: s.larosa
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