if you have a CAD program you have this figured out already but technique is:
1: get image *.jpg , Google best as satellite photo is most accurate.
2: insert image into AutoCAD, trace a continuous line over the centreline. Use poly lines.
3: scale centreline and image to exact length of published track length, can get within 1 meter.
4: change the width of the track polyline to match the underlying image. Use a dark color.
5: draw a reference rectangle 1000m square beside your track. Draw a reference grid 200 m squares over the track. Also add a thick 600m. Long polyline 5m. Wide.
6: plot as a *.jpg at highest pixel count.
7: open jpg in gimp or photoshop, rotate and crop as necessary. I duplicate layer and "multiply" mode to riches up the colours. Scale image to 2000 pixels max longest edge.
8: email the jpg to yourself on your tablet account. Open email on tablet and save jpg.
9. Now when use the jpg as a reference image in Course maker you can use the reference squares to scale.
See sample, attached.
1: get image *.jpg , Google best as satellite photo is most accurate.
2: insert image into AutoCAD, trace a continuous line over the centreline. Use poly lines.
3: scale centreline and image to exact length of published track length, can get within 1 meter.
4: change the width of the track polyline to match the underlying image. Use a dark color.
5: draw a reference rectangle 1000m square beside your track. Draw a reference grid 200 m squares over the track. Also add a thick 600m. Long polyline 5m. Wide.
6: plot as a *.jpg at highest pixel count.
7: open jpg in gimp or photoshop, rotate and crop as necessary. I duplicate layer and "multiply" mode to riches up the colours. Scale image to 2000 pixels max longest edge.
8: email the jpg to yourself on your tablet account. Open email on tablet and save jpg.
9. Now when use the jpg as a reference image in Course maker you can use the reference squares to scale.
See sample, attached.
