Category: NZTekonverse -> Gimp
-
NZ Rail Maps: Mosaic overlays and masking
One of the useful things a good graphics package such as Gimp can do is use masks to combine layers when they overlap, so that instead of by default they overlap at their physical edges, you can mask off a part of an image so that the overlap actually is visible at the edge of…
-
Gimp resource limits
Right now I am completing a set of maps covering from Dunedin to Mosgiel, some 17 km of rail corridor continuously mapped. The result is a Gimp file of over 60 GB in size and Gimp itself is using about 150 GB of storage (memory plus swap plus home drive cache) to allow this file…
-
NZ Rail Maps: Two different ways to cover a large area in Gimp [3]
Last time in this series I talked about my experiments in testing whether Gimp could handle a large canvas size successfully, since this would tend to suggest a linear project for covering a long section of rail corridor (17 km in a current project) could work. If successful this might be a better way of…
-
NZ Rail Maps: Two different ways to cover a large area in Gimp [2]
Following on from my previous post, in the case of the Dunedin-Wingatui map mosaic Gimp project, I chose to extend the size of the map canvas from 7×7 to 11×7 and bring the tiles for the Wingatui station alongside those of Green Island-Abbotsford. The reason for this was to be able to bring some smaller…
-
NZ Rail Maps: Two different ways to cover a large area in Gimp [1]
In my last post I compared a couple of large Gimp projects I worked on. Both of these cover a significant distance and they use different ways of doing it. It is illustrative to look at those two different ways and consider if one is better than the other. The first way of doing in…