River Map

[rich2005]

(10-28-2017, 12:44 PM)SneakyAdder Wrote:

(10-28-2017, 12:27 PM)Blighty Wrote:

(10-28-2017, 11:28 AM)SneakyAdder Wrote: I have attached an example of what I’m trying to achieve.

I looked at Google Maps and came up with map below. Would that be suitable as a starting point?

Hi Blighty.

Yes, that looks like a great starting point.

If the river is, say 12 miles long - would I have to take multiple screenshots on Google Maps and then stich them together?

You have to strike a balance between very simple (google) and maybe too complicated (OS maps)

This is an OS one: https://i.imgur.com/4OiQALd.jpg

Stitching an image together from screenshots. The tool for serious stitching panoramas is Hugin, however simple maps can be done in Gimp using a script pandora http://www.shallowsky.com/software/pandora/ If you use this, read the web page. 12 images will be a challenge.

Might go like this: 5 screenshots as an example

1. Make sure the screenshots have a suitable overlap then open in Gimp as layers. https://i.imgur.com/kOLdEIQ.jpg
2. Crop out any junk: By default, Gimp crops all layers. https://i.imgur.com/kCY03GC.jpg
3. Maybe necessary: The screenshots go top to bottom, but the script works left-to-right. If required rotate the image 90 deg https://i.imgur.com/FO7SbLg.jpg
4. Start the script: This type of image does not require overlap transparency. https://i.imgur.com/C8oMO3Y.jpg
5. Use the move tool to drag each layer across and match up the features (by eye) https://i.imgur.com/HFVO2Er.jpg
6. When complete, use the crop tool again, rotate back to correct orientation.



Save your work as a Gimp .xcf, which keeps layers masks etc. Export as a jpg or png as a single layer.