Category: NZTekonverse -> Gimp
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Gimp resource usage challenges
Whilst Gimp has been great for the NZ Rail Maps mosaics, one of its challenges has been with the layer group feature. This feature unfortunately does a lot more than just organise layers in the layer list. Apparently it adds extra stuff that you may not need. From my experience I have found the layer…
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NZ Rail Maps: Optimising Gimp and using 4x4x4 grid for mosaics [1]
As recent posts have outlined I am using a new grid system for the NZ Rail Maps mosaics to standardise on the use of 4800×7200 tiles for historical aerial images, because Qgis limitations means it tends to run out of memory exponentially more rapidly and be much slower to update the screen if larger sizes…
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How to optimise Gimp resource usage
Since I have one computer for the NZ Rail Maps project that is mostly used just for Gimp for mosaic creation and as it has got 32 GB of RAM and 100 GB of Linux swap on a partition of the SSD I need to make sure it uses the available system resources efficiently. One…
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NZ Rail Maps: Scaling up map mosaics & creating new tile grids
One of the issues that comes up with doing the map mosaics for NZ Rail Maps is that the resolution of Retrolens aerial imagery can often be very high, when using the official NZR survey images at the scale that they appear on Retrolens. A typical scale is only 1:4300 which gives us a lot…