User guide

Page 137

visualise | communicate | ENGAGE Google Maps in InstantAtlas Reports

g the InstantAtlas Area Profile Template User Guide

G.4. Troubleshooting Hints

The following hints might help you to find a solution, when you cannot get

Google Maps to work correctly in your report:

3. Google Maps appear but your other map layer(s) are not in the

right location (they might appear somewhere near the west coast of

Africa) (Figure 165).

Figure 165

The reason for this is that the re-projection was not successful. Please

check:

 that you are using ESRI shapefiles for all your base and contextual

layers. The re-projection will not work for MapInfo MID/MIF or TAB

files. You will need to re-project MapInfo files outside of

InstantAtlas into ‘WGS 1984 Web Mercator (Auxiliary Sphere)’

before you can use them together with Google Maps in

InstantAtlas.

 that you have a correct .prj file for each shapefile you use. This file

describes the projection of the shapefile. The information in the

.prj file has to match the projection the shapefile is actually in.

It is not enough to take any .prj file and rename it to match the

shapefile name!

You can however, copy a .prj file from another shapefile and

rename it accordingly when you are sure that both shapefiles are

in the same projection.

If you do not have a .prj file, one way to create one it to load the

shapefile into ESRI ArcMap and export it again. During the

exporting process a .prj files gets created.

 that your shapefile is in one of the supported projections:

o Un-projected coordinate systems (e.g. latitude/longitude)

o Coordinate systems that use a Transverse Mercator

projection (e.g. British National Grid, UTM zones)

o Global coordinate systems using a Mercator projection