The grid thematic layer is different from other thematic layers in that, once it is created, it is independent of its base layer. Because it is a type of raster image, it can be reordered in the Map window as a separate layer. If the data in the base layer changes, the grid will not automatically update. In that case, you must re-interpolate the grid. The layer displays in Layers window with a default layer name of table name fieldname.
Using the Info Command and InfoTips with Grid Layers
You can use the Info command to get information on individual grid cells. When the Map window is active, on the MAP tab, in the Options group, click Map Tools, and click Info. Click on the map to display the surface grid's name and the data value associated with it. The information in the Info window is read-only in this instance, as you cannot change the cell's value. When InfoTips are active, hovering the cursor over a grid cell will display the cell's value.
Changing the Default Status of InfoTips
An InfoTip displays the label expression for the object in the topmost selectable layer. InfoTips are activated by default and are available in a Map window. They work for the Select, Label, and Info commands.
To set InfoTips for a particular layer, adjust the Selectable attribute in the Layers window so that the tips display for the layer you want.
To turn off (or on) the default status of InfoTips:
- On the PRO tab, click Options, and Map window to open the Map Window Preferences dialog box.
- Clear the Show InfoTips check box to turn off InfoTips. Select this check box to turn on InfoTips
- Click OK.