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cggoogle_metersperpixel.pro
top cgGoogle_MetersPerPixel
Utility
result = cgGoogle_MetersPerPixel( [zoomLevel])
This funtion returns the number of meters per pixel for a particular zoom level in images returned using Google's Static Image API.
Parameters
- zoomLevel in optional type=integer default=12
The Google zoom level used in retrieving Google Maps using the static image API. Documentation: https://developers.google.com/maps/documentation/staticmaps/.
Examples
For example, to find the meters per pixel for a zoom level of 12:
IDL> Print, cgGoogle_MetersPerPixel(12)
38.218514
Author information
- Author:
FANNING SOFTWARE CONSULTING:
David W. Fanning 1645 Sheely Drive Fort Collins, CO 80526 USA Phone: 970-221-0438 E-mail: david@idlcoyote.com Coyote's Guide to IDL Programming: http://www.idlcoyote.com- Copyright:
Copyright (c) 2012, Fanning Software Consulting, Inc.
- History:
Written, 20 June 2012. Updated the algorithm for determining meters per pixel to use WGS-84 equitorial radius based on suggestion by Alain LeCacheax. 11 Sept 2012. DWF.
File attributes
| Modification date: | Thu Sep 13 06:56:24 2012 |
| Lines: | 95 |
| Docformat: | rst rst |