pyguymer3.geo.create_map_of_points

pyguymer3.geo.create_map_of_points(pntLons, pntLats, pngOut, /, *, angConv=0.1, background='NE', chunksize=1048576, conv=1000.0, debug=True, eps=1e-12, exiftoolPath=None, extent=None, fillColor=(1.0, 0.0, 0.0), fov=None, gifsiclePath=None, jpegtranPath=None, method='GeodesicBox', name='natural-earth-1', nAng=9, nIter=100, nRefine=1, onlyValid=False, optipngPath=None, padDist=22224.0, prefix='.', ramLimit=1073741824, repair=False, resolution='10m', route=None, routeFillColor=(0.0, 0.5019607843137255, 0.0), satellite_height=False, scale=1, skipFillColor=(1.0, 0.6470588235294118, 0.0), skips=None, timeout=60.0, title=None, tol=1e-10, useSciPy=False)[source]

Save a PNG map of a sequence of points

This function accepts a sequence of longitudes and latitudes then saves a PNG map containing all of them drawn together in a big line.

Parameters:

  • pntLons (numpy.ndarray) – the sequence of longitudes

  • pntLats (numpy.ndarray) – the sequence of latitudes

  • pngOut (str) – the name of the output PNG

  • angConv (float, optional) – the angle change which classifies as converged (in degrees)

  • background (str, optional) – the type of background to add (recognised values are: “GSHHG”; “image”; “NE”; “none”; and “OSM”)

  • chunksize (int, optional) – the size of the chunks of any files which are read in (in bytes)

  • conv (float, optional) – the Geodesic distance that defines the middle as being converged (in metres)

  • debug (bool, optional) – print debug messages and draw the circle on the axis

  • eps (float, optional) – the tolerance of the Vincenty formula iterations

  • exiftoolPath (str, optional) – the path to the “exiftool” binary (if not provided then Python will attempt to find the binary itself)

  • extent (list of floats) – for high-resolution images, save time by specifying the extent that is to be added

  • fillColor (tuple of int, optional) – the fill colour of the points

  • fov (None or shapely.geometry.polygon.Polygon, optional) – clip the plotted shapes to the provided field-of-view to work around occaisional MatPlotLib or Cartopy plotting errors when shapes much larger than the field-of-view are plotted

  • gifsiclePath (str, optional) – the path to the “gifsicle” binary (if not provided then Python will attempt to find the binary itself)

  • jpegtranPath (str, optional) – the path to the “jpegtran” binary (if not provided then Python will attempt to find the binary itself)

  • method (str, optional) – the method for finding the middle of the points

  • name (str, optional) – the name of the image in the database

  • nAng (int, optional) – the number of angles around the middle location to search over

  • nIter (int, optional) – the maximum number of iterations (particularly the Vincenty formula)

  • nRefine (int, optional) – the number of refinements to make (each refinement halves the “conv” distance)

  • onlyValid (bool, optional) – only return valid Polygons (checks for validity can take a while, if being called often)

  • optipngPath (str, optional) – the path to the “optipng” binary (if not provided then Python will attempt to find the binary itself)

  • padDist (float, optional) – the padding to draw around the points (in metres)

  • prefix (str, optional) – change the name of the output debugging CSVs

  • ramLimit (int, optional) – the maximum RAM usage of each “large” array (in bytes)

  • repair (bool, optional) – attempt to repair invalid Polygons

  • resolution (str, optional) – the resolution of the image or NE dataset or GSHHG dataset

  • route (shapely.geometry.linestring.LineString, optional) – an extra line to draw on the map

  • routeFillColor (tuple of int, optional) – the fill colour of the extra route

  • satellite_height (float, optional) – if a distance is provided then use a “NearsidePerspective” projection at an altitude which has the same field-of-view as the distance

  • scale (int, optional) – the scale of the tiles

  • skipFillColor (tuple of int, optional) – the fill colour of the skipped points

  • skips (numpy.ndarray, optional) – an array of booleans as to whether to include/exclude each individual point from calculating the image’s field-of-view (this allows the great circles from flights to be drawn but for them to not expand the image to fit in the departing airport); if not provided then all points are used

  • timeout (float, optional) – the timeout for any requests/subprocess calls (in seconds)

  • title (str, optional) – the title

  • tol (float, optional) – the Euclidean distance that defines two points as being the same (in degrees)

  • useSciPy (bool, optional) – use “scipy.optimize.minimize” or my own minimizer

Notes

Copyright 2017 Thomas Guymer [1]

References