Drawing shitty pictures with a Garmin Forerunner 35
My phone showed that I was able to closely follow the custom map, but what the GPS logged showed a different story. Here is the output uploaded to Strava:
and by going to the Garmin connect site it is possible to download the track in a GPX format, which can be imported into qgis as a vector file.
Here the logged datapoints are off by about 25' to 35'.
So, the next step will be to follow a custom map while logging the gps on my cell phone, and see how far off the datapoints are there, in relation to the map.
The next step was to create an interactive map, and test the capabilities of the Garmin device, just to see what could be accomplished.
I grabbed an image off of a google search, opened it up in Gimp, and cleaned it up so that I just had the lines that I wanted:
After I was happy with what I had I exported the image as a .tif, and then went to qgis.
First I added an OpenMaps layer, and then imported the .tif image using the Freehand raster georeferencer plugin. This made it easy to position the image where I wanted to walk, since there was no geo info with the image I just created.
Now that the image is in place, a layout is created, and saved as a pdf, which was then transferred to my phone, and imported into the Avenza Maps app.
Here I placed a png of pacman over a portion of Galveston, and just tried to follow it the best I could. It was pretty terrible.
Here is the data that was captured, and uploaded to strava: