FCAV2 NDVI Multigraph Service

This application contains the code and data needed for the server-side part of the "multigraph" feature of NEMAC's FCAV2 viewer. This is the feature that allows a user to click on a point in the map and see a graph of historical NDVI values for that point. The code and data here provide a service that receives requests from the FCAV2 application containing the coordinates of a point, and returns a MUGL file containing the graph specification and data for the NDVI graph for that point.

The resulting timeseries differentiates NDVI data from two data sources: Standard and Near-Realtime.

• data directory

  Directory of symlinks to data sources on disk.

• html directory: this is the web root of the project, containing a single python script tsmugl_product.cgi that implements the service

• config.py: configuration file used by the script above; this file contains the location of the data directory, and a list of the data files to be used.

• mugl.tpl.xml: template file used by the above script when generating the MUGL graph file

All-year STD Maxes TIF File Structure

Typically each of these files contains the data for one year, which comes to 46 bands throughout the year, each separated from the next by 8 days. The files do not contain the actual dates themselves.

The TIF for the current year will usually have less than 46 bands and is actively rebuilt as part of the ForWarn 2 production process.

NRT maxes

Any available NRT data for dates where STD is not available yet is appended to the retrieved STD data and colored red in the viewer.