Databases are often messy, filled with spelling and typing mistakes – and this makes it impossible to simply match one table against another. One of the biggest problems encountered when trying to geocode a table is how to handle variations in spelling and naming between points. (I did manage to achieve it once in QGIS using a convoluted approach involving the raster calculator and some other steps I’ve thankfully forgotten.)īut now, you can forget about all that frustration and quickly turn a raster grayscale by using a control right inside the layer properties! You even get a choice of desaturation methods, including lightness, luminosity or average. Best part about this is you can then right click on the layer to save the altered version out to a full-resolution georeferenced image. Previously I’ve tried using various command line utilities, but never found one which could turn an image grayscale without losing embedded georeferencing tags. How about turning an image grayscale? I regularly have to do this with street directory basemaps, and until now couldn’t find a satisfactory way of doing this in QGIS. A bit over-the-top perhaps, but it IS handy to make quick adjustments to raster colours in this way without the need for any external programs. This actually looks like somewhere I’d like to live.
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