Use bar charts to analyze multiple variables per record, to make comparisons between the size of the bars in each chart and obtain information about a record in your table. Compare one bar in all the bar charts to draw conclusions about a variable across all of the records, or compare the height of the bar charts to obtain information about your entire table.
To create a map with bar charts:
- Click on a Map window containing the layer you wish to create the theme for.
- On the MAP tab, in the Content group, click Add Theme to open the Create Thematic Map - Step 1 of 3 wizard panel.
- Click Bar Charts and select a template from the list.
- Click Next to open the Create Thematic Map - Step 2 of 3 dialog box.
- Choose the table on which you want to base the bar charts, and choose the fields or expressions containing the data values.
- Click Next to open the Create Thematic Map - Step 3 of 3 dialog box.
Use this panel in the wizard to customize the map or its legend.
- Click OK.
Customizing Bar Chart Styles on Your Map
You can customize your Bar Charts thematic map using the Styles and/or Legend button. To go back to any of the earlier wizard panel to make changes, click Back. You can customize two areas on a bar chart map:
- Styles
- Map Legend
The bar styles styles include the height, width, and color of the bars, the type of bar chart, the bars' scale, the charts' orientation, and other bar attributes, such as the border of the bars and the frame around the bars.
To customize bar chart styles:
- Click on a Map window containing the layer you wish to create the theme for.
- On the MAP tab, in the Content group, click Add Theme to open the Create Thematic Map - Step 1 of 3 wizard panel.
- Click Bar Charts and select a template from the list.
- Click Next to open the Create Thematic Map - Step 2 of 3 dialog box.
- Choose the table on which you want to base the bar charts, and choose the fields or expressions containing the data values.
- Click Next to open the Create Thematic Map - Step 3 of 3 dialog box.
Use this panel in the wizard to customize the map or its legend.
- Click Styles to open the Customize Bar Styles dialog box.
- Choose the items you want to customize and make the desired changes.
- Click Options for additional customizing features.
- Click OK to save your changes.
All bars are scaled down to a zero-sized bar for a zero value. The default setting is to scale by a constant, which is best for representing data in one dimension. Since you are only concerned with one dimension in bar charts, the height of the bars, we recommend that you stay with the default scaling method.
If your data range is extremely large, or the numbers are related in an exponential way, graduate the size by log.
Customizing the Legend of a Bar Chart
MapInfo Pro creates a legend automatically when you create a thematic map. Keep the default settings or customize your legend to suit your needs. Click Legend in the Customize section of the Create Thematic Map - Step 3 of 3 dialog box to customize your map legend's fonts, titles, and more (see Customizing a Thematic Map Legend).