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DIY Cartography
Tudor Pavel
1 / 31
What you need
A poorly made drawing of a parking
GIMP Image Editor
A little patience (Twelve-step program*)
* http://en.wi...
The poorly made drawing of
Piata Marasti parking
3 / 31
To overlay the image on the
map, you need:
The image (doh!), but parking rotated with
North up
Its width (in mm)
Its heigh...
Step 1: Screenshot Google Maps
5 / 31
Step 2-1: Select measure tool
6 / 31
Step 2-2: Measure angle (65)
7 / 31
Step 3: Import drawing
8 / 31
Step 4-1: Select rotate tool
9 / 31
Step 4-2: Rotate drawing
10 / 31
Step 5-1: Use scale tool
11 / 31
Step 5-2: And move tool
12 / 31
Step 5-3: Scale and Move
13 / 31
Step 6: Guides for Image Center
14 / 31
Step 7: Get Image Center
coordinates
15 / 31
Shopping list update
The image (doh!), but parking rotated with
North up
Its width (in mm)
Its height (in mm)
Its scale (1...
Step 8-1: Use fuzzy select tool
17 / 31
Step 8-2: Select unnecessary
whiteness
18 / 31
Step 8-3: And clean it up
19 / 31
Step 8-4: Export it
20 / 31
Shopping list update
The image (doh!), but parking rotated with
North up
Its width (in mm)
Its height (in mm)
Its scale (1...
Step 9-1: Go to scale image
22 / 31
Step 9-2: Change to mm to get
width+height
23 / 31
Shopping list update
The image (doh!), but parking rotated with
North up
Its width (in mm) -> 263 mm
Its height (in mm) ->...
Step 10-1: Measure wall in image
25 / 31
Step 10-2: Measure wall in real life
with coordinates of the building
corners
26 / 31
Calculate image scale
44790(mm) / 149(mm) = 300.6
=~ 1:300
27 / 31
Shopping list done
The image (doh!), but parking rotated with
North up
Its width (in mm) -> 263 mm
Its height (in mm) -> 2...
Step 11: Upload
29 / 31
Step 12: Cigar
30 / 31
31 / 31
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DIY Cartography

  1. 1. DIY Cartography Tudor Pavel 1 / 31
  2. 2. What you need A poorly made drawing of a parking GIMP Image Editor A little patience (Twelve-step program*) * http://en.wikipedia.org/wiki/Twelve-step_program 2 / 31
  3. 3. The poorly made drawing of Piata Marasti parking 3 / 31
  4. 4. To overlay the image on the map, you need: The image (doh!), but parking rotated with North up Its width (in mm) Its height (in mm) Its scale (1:x) Coordinates of image center (LatLng) 4 / 31
  5. 5. Step 1: Screenshot Google Maps 5 / 31
  6. 6. Step 2-1: Select measure tool 6 / 31
  7. 7. Step 2-2: Measure angle (65) 7 / 31
  8. 8. Step 3: Import drawing 8 / 31
  9. 9. Step 4-1: Select rotate tool 9 / 31
  10. 10. Step 4-2: Rotate drawing 10 / 31
  11. 11. Step 5-1: Use scale tool 11 / 31
  12. 12. Step 5-2: And move tool 12 / 31
  13. 13. Step 5-3: Scale and Move 13 / 31
  14. 14. Step 6: Guides for Image Center 14 / 31
  15. 15. Step 7: Get Image Center coordinates 15 / 31
  16. 16. Shopping list update The image (doh!), but parking rotated with North up Its width (in mm) Its height (in mm) Its scale (1:x) Coordinates of image center (LatLng) -> (46.776649, 23.611951) 16 / 31
  17. 17. Step 8-1: Use fuzzy select tool 17 / 31
  18. 18. Step 8-2: Select unnecessary whiteness 18 / 31
  19. 19. Step 8-3: And clean it up 19 / 31
  20. 20. Step 8-4: Export it 20 / 31
  21. 21. Shopping list update The image (doh!), but parking rotated with North up Its width (in mm) Its height (in mm) Its scale (1:x) Coordinates of image center (LatLng) -> (46.776649, 23.611951) 21 / 31
  22. 22. Step 9-1: Go to scale image 22 / 31
  23. 23. Step 9-2: Change to mm to get width+height 23 / 31
  24. 24. Shopping list update The image (doh!), but parking rotated with North up Its width (in mm) -> 263 mm Its height (in mm) -> 228 mm Its scale (1:x) Coordinates of image center (LatLng) -> (46.776649, 23.611951) 24 / 31
  25. 25. Step 10-1: Measure wall in image 25 / 31
  26. 26. Step 10-2: Measure wall in real life with coordinates of the building corners 26 / 31
  27. 27. Calculate image scale 44790(mm) / 149(mm) = 300.6 =~ 1:300 27 / 31
  28. 28. Shopping list done The image (doh!), but parking rotated with North up Its width (in mm) -> 263 mm Its height (in mm) -> 228 mm Its scale (1:x) -> 300 Coordinates of image center (LatLng) -> (46.776649, 23.611951) 28 / 31
  29. 29. Step 11: Upload 29 / 31
  30. 30. Step 12: Cigar 30 / 31
  31. 31. 31 / 31

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