init

Author: scivision

.gitignore

@@ -1,3 +1,4 @@
+*.kml
 # Byte-compiled / optimized / DLL files
 __pycache__/
 *.py[cod]

csv2kml.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python
+"""convert logged positions to KML"""
+import numpy as np
+from simplekml import Kml
+
+def makekml(t, lonLatAlt, ofn):
+    """
+    write KML track/positions
+
+    t: vector of times
+    lonLatAlt: longitude, latitude, altitude or just lon,lat
+    ofn: KML filename to create
+    """
+    lonLatAlt = np.asarray(lonLatAlt)
+    assert lonLatAlt.ndim==2 and lonLatAlt.shape[1] in (2,3), 'Expect Nx2 or Nx3 array'
+
+    kml = Kml(name='My Kml',open=1)
+
+    if t is not None: # track over time
+        trk = kml.newgxtrack(name='My Track')
+        trk.newwhen(t)
+        trk.newgxcoord(lonLatAlt.tolist()) #list of lon,lat,alt, NOT ndarray!
+    else: # just a bunch of points
+        for i,p in enumerate(lonLatAlt): # iterate over rows
+            kml.newpoint(name=str(i), coords=[p])
+
+    print('writing',ofn)
+    kml.save(ofn)
+
+
+if __name__ == '__main__':
+    from argparse import ArgumentParser
+    p = ArgumentParser()
+    p.add_argument('logfn',help='csv logfile to read')
+    p.add_argument('kmlfn',help='kml filename to write')
+    p = p.parse_args()
+
+    dat = np.fliplr(np.loadtxt(p.logfn, usecols=(1,2)))
+
+    makekml(None,dat,p.kmlfn)