Contour Map Creator 0.402improvement ideas
Sampling
North West corner
Latitude: Longitude:
South East corner
Latitude: Longitude:
Sampling Poinst:
N-S axis: step size: W-E axis: step size:
Plot Options
  Units:
Rounding for legend (decimal places):  
Save/Load Cookie
Other Options

Instructions

Go to the desired location in the map, set two markers by clicking the map to define a rectangle (or enter coordinates manually). Click the button [get data]. Optionally you can change the number of elevation samples you want in each direction, the more the better (max 400). You can also change the number of contours or set custom contour values. You can save some data in cookies, however there is a limit. Use the manual saving text areas below alternatively.

This service comes without any warranty whatsoever, including but not limited to functioning or correctness.

Resources: This service uses ArcGIS Map by Esri, the OpenStreetMap, Geocoding by Nominatim, Mapzen, Leaflet, jQuery and the CONREC contouring algorithm by Paul Bourke and Jason Davies.

Created by Christoph Hofstetter (christophhofstetter (at) gmail.com) 2013-2025

Visit my other projects at urgr8.ch and Living in Natural Harmony.

Elevation Data

min:
max:

Save Data


Copy data and save somewhere

Load Data


Paste data back here and click button below

Save Contour Map as an SVG file

If you want to have the contour maps as an individual layer (e.g. to create overlays) you can copy the code underneath the image below and save it as an svg file. Please note, as for now, the drawing below is square and you may want to stretch it to cover the actual area in a map.

Download SVG file
Download KML file

Version History

Version Modification Date
0.402 - fixed elevation 0 issue for KML export 17.06.2025
0.401 - extended search engine to include whole addresses 16.06.2025
0.400 - updated version with leaflet and alternative maps
- added scale
- improved search for cities		 04.06.2025
0.314 - fixing issue with svg file (not opening) 06.10.2019
0.313 - fixing issue with kml file (google earth import) 29.07.2019
0.312 - fixing issue with https connections 21.07.2019
0.311 - added download link for KML file 27.01.2019
0.310 - fix for google map API 12.10.2018
0.309 - added download link for SVG file 01.04.2017
0.308b - resolved an issue with get data 21.02.2017
0.308 - quick fix after malfunction 03.11.2013
0.307 - corrected line scramble issue
- added rounding option		 18.09.2013
0.306 - added choice to select units (m or ft)
- added fullscreen option		 09.09.2013
0.305 - added saving as svg 08.09.2013
0.304 - added searching
- modified layout		 20.08.2013
0.303 - added plotting of sample points 19.08.2013
0.302 - added saving in cookie 19.08.2013
0.301 - added feature request link
- added interval mode for contours added interval mode for contours
- added manual map export/import		 18.08.2013


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