Note to self # 02: importing GPS tracks and points into gis

If you, after changing the projection of GPS tracks and importing them into arcgis, think that not all points have been exported, try zooming to the full extent of the layer. The waypoints haven’t “miraculously disappeared, I swear”, they are just outside of your current view extent.
Future self, remember this:
a) There’s a difference between trackpoints [...]

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Note to self #01: Removing the black background from a georeferenced image

If you have a black & white image which you georeferenced in arcgis and there’s a nasty black square/background that you don’t like, don’t think that changing black to transparent helps. It doesn’t. Even if it looks like it does when you click OK.
Me, trying to get rid of the black background:
Hey, where did my [...]

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