Creating Raster from Strava GPX points

JohnnyHarley — Wed, 13 May 2020 20:41:18 GMT

Hello!

I am working on maybe an unusal project right now. I have downloaded a race route from my Strava account as a GPX file and then used the GPX to Points tool in Arc. What tool should I use that would and parameters so that this current point route (attached) could be converted into a straight DEM file. The current shapefile has a Z value field. I could convert this point shapefile into a line and then add a DEM online and visualize the elevation of the route from there but thought there might be a way to bypass that. Thanks!!

Re: Creating Raster from Strava GPX points

DanPatterson — Sun, 12 Dec 2021 10:35:26 GMT

If the points are sequential along the route, perhaps just calculate the cumulative distance and the Z value into 2 fields and produce an X-Y graph.

Use

Python parser required. For calculating the Z value into a field (type Double) use...

!Shape!.centroid.Z‍

and for the cumulative distance

Expression

dist_cum(!Shape!)‍‍

Code block

"""-----------------------------------------
dist_cumu(shape)
input:      shape field
returns:    cumulative distance between points
expression: dist_cumu(!Shape!)
"""

x0 = 0.0
y0 = 0.0
distance = 0.0
def dist_cumu(shape):
    global x0
    global y0
    global distance
    x = shape.firstpoint.X
    y = shape.firstpoint.Y
    if x0 == 0.0 and y0 == 0.0:
        x0 = x
        y0 = y
    distance += math.sqrt((x - x0)**2 + (y - y0)**2)
    x0 = x
    y0 = y
    return distance‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Then you can use the two field for graphing inside or outside (Table to Excel tool, for instance)

topic Creating Raster from Strava GPX points in Elevation Data Questions

Creating Raster from Strava GPX points

Re: Creating Raster from Strava GPX points