Data Format Requirements for Importing Data into GeoMapApp

Data Tables
Data may be imported from local files or remote URLs. The accepted formats are:

Microsoft Excel tables.

Ascii (text) tables:

    One row per line of ascii text.

    Columns may be tab-separated or comma-separated.

    Select tab-separated or comma-separated from pull-down box in the upper-right part of the "Imported Data Tables" window.

A table copied from a spreadsheet can be directly pasted into the text box window and manipulated provided it has columns of latitude and longitude.

Data can also be typed directly into the text box window. Data in the text box window can be edited.

Tips for Success:

The first row in each file must contain text column headings. The column headings can be whatever you want, but the terms 'latitude' and 'longitude' will be automatically recognised. In the Config dialog box, you will be asked to confirm the correct latitude and longitude columns by selecting the headings used in your data table. Location must be expressed in decimal degrees, with negative values for southern and western hemispheres. Do not use NSWE.

Shape Files

Shape files can be imported from your local disk or by specifying a URL. Shapefiles must be in geographic coordinates (Latitude and Longitude). Shapefile import in UTM coordinates has not yet been implemented. If importing from your local disk, select only the *.shp file. However, the *.dbf, *.shx files must also be present in same directory. So, for example, "worlds.shp" will not work alone, "worlds.dbf" and "worlds.shx" must be located in the same directory as "worlds.shp".

Similarly, if importing a shape file using the URL option, only the *.shp file needs to be specified but all three files must reside at the URL.

Best Disk Location for your Grid Files

Create a new directory just for your grid or for a number of grids in the same region that do not overlap. GeoMapApp will create tile directories within that folder. This avoids the problem of tile files scattered about on your desktop and hard drive. 

Overlapping grids should each have their own directory/folder.

Grids - Out of Memory Problem

There may be limitations on maximum grid size that can be imported depending on memory allocation of your computer. If an out-of-memory error is occurring when using GeoMapApp.jar try running from the command line (use "Run" in Windows and type "cmd", this should bring up a DOS window). Go to the directory where GeoMapApp.jar is located, type "java -jar -Xmx512m GeoMapApp.jar" into the command line and press enter. The -Xmx option increases the maximum memory that can be used by the program being run. Grids up to 800 MBytes in size have been successfully imported.