Thematic mapping by categories or code

Discrete Thematic Mapping

When using thematic mapping to display your data, you may wish to represent the data based on the category it falls within; this is called Discrete mapping. In this example, we will be displaying customers on a map based upon the store that they shopped at.

• Open a map

• Go to the data tab and find the schema which contains the data you want to display (in this example branch customers). Right click and select Add Map Layer.

• This will open the Layer Wizard. Your schema should be selected at the top and you can then give your layer a name if you wish.

• For Thematic Classifier, we need to specify that we want the data classified by branch. Click Select…

• This opens the Expression box. Open your schema table, followed by its Master Table. We then need to paste BRANCH into the Expression.

• It should look something like this: MASTER.BRANCH

• Click OK. Then click Next. This will take you to the Classification screen.

• Under Type, select Discrete.

• You can now manually specify the Number of Classes if you wish, but for this example we will click Find All to let InSite automatically assign classes.

• The Classes box should now be filled and will look like the below image:

• Click Next and check that the Layer Type is set to Symbol and then click Next again.

• Here you will be shown the different classes, as specified earlier and you here you can edit the appearance of how the points will appear on the map.

• You also have the option to have the appearance follow a pre-defined theme, to do this click on the drop-down box next to Theme Templates, select your preferred theme and click Apply.

• Finally, click Create

If you wish to edit your map layer, you can right click on the layer in Map Properties and select Edit… where you will be taken back to the Layer Wizard.