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New Point Data

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It is relatively straight forward to plot point data in Maptitude. As well as creating a completely new map with the Create-a-Map Wizard, you can import point data into an existing map. Do this by opening the File Open dialog box (select Open… on the selecting File menu). The file open dialog box lists a large number of different input data types supported by Maptitude:

Open data file (click for larger view)

Select the Excel file type. For this example we will use the TXLA.xls workbook from the MileCharter examples. This workbook contains two worksheets. Select the Louisiana Cities worksheet when prompted. The worksheet contains geo-location information (Latitude, Longitude data fields) so you will also be prompted as to whether you wish to create a geography file (i.e. new map layer). The alternative is to produce a data table without a corresponding map layer.  Select Yes for a Geography File, and you will be presented with a dialog box asking about the new geography layer:

The layer options for the new data

The defaults here are all acceptable. We wish to import all of the data records, plotting them on the map using the Longitude and Latitude fields. By pressing the Coordinates button, it is possible to select a different input coordinate system.

Note that if you wished to plot the data using named features (e.g. by State or Postcode), it is usually more flexible to import the data as a data table, and then to join it to an existing layer.

The input data did not have a suitable ID field (unique integer identifier), so we tell Maptitude to create one.

Press OK, and Maptitude will prompt you for the name of the new geography file that will store the new layer. After doing this, Maptitude will create the new layer. Here the data points are plotted on the map with blue stars (existing Texas data points have red stars):

The imported Louisiana data points as blue stars (click for larger view)

 

Maptitude has also created a Data View which presents the imported data in a familiar table format:

DataView for the imported Louisiana data (click for larger view)

Note: If you imported your data without geographic information or chose to ignore the geographic information, Maptitude would have created a Data View but not the map layer. You can then treat the data as non-geographic data, or display it by joining it to an existing map layer.

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