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MATHEMATICA IMPORT/EXPORT 格式参见 »|更多关于 »

GPX (.gpx)

GPX global positioning data.
Standard format for exchanging GPS location data.
Stores GIS data recorded with GPS devices.
GPX is an acronym for GPS Exchange Format.
XML format.
Introduced in 2002.
  • Import fully supports the GPX format version 1.1.
IMPORT
  • Import["file.gpx"] imports a GPX file and returns a combined rendering of all graphics layers.
  • Import imports the specified element from a GPX file.
  • Import imports multiple elements.
  • See the reference pages for full general information on Import.
参数
"Elements"list of elements and options available in this file
"Rules"full list of rules for each element and option
"Options"list of rules for options, properties, and settings
  • Data representation elements:
"Data"graphics primitives for each layer
"Graphics"all layers combined into a single Graphics object
"GraphicsList"list of graphics representing the layers of a GPX archive
  • Import by default uses the element for the GPX format.
  • Import with the element gives the combined graphics contents as vector and raster graphics.
  • Import returns an expression of the form . Individual layers are given as a list of rules representing the geometry as well as numerical and textual information associated with the features.
  • Meta-information elements:
"Comments"description of the file as a string
"LayerNames"all layer names, given as a list of strings
"Metadata"author and copyright information
"Name"name given in the file
"SpatialRange"range of geographic coordinates, typically given in decimal degrees
  • Geographic coordinates in GPX files always refer to the WGS84 datum.
选项
  • General rendering options:
BackgroundNonebackground color
ImageSizeAutomaticoverall size of the image
范例关闭所有单元
例   (3)
Import all layers from the file:
List the layer names from the file:
Import metadata elements:
Compute the elevation range for the data:
Plot the elevation profile for the route:
Compute the total distance in meters by adding up the line segments:
Import all layers from the file:
In[1]:=
Click for copyable input
Out[1]=
 
List the layer names from the file:
In[1]:=
Click for copyable input
Out[1]=
 
Import metadata elements:
In[1]:=
Click for copyable input
Out[1]=
Compute the elevation range for the data:
In[1]:=
Click for copyable input
Out[1]=
Plot the elevation profile for the route:
In[2]:=
Click for copyable input
Out[2]=
 
Compute the total distance in meters by adding up the line segments:
In[1]:=
Click for copyable input
Out[1]=
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