Circles

Circle analyses allow you to display circles around a list of points or locations on the map. You specify the radius of the circles by kilometers. You can also specify the color and line width of the circle edge and the filling of the circular areas. The analysis is useful, for example, to represent "theoretical" or "ideal" catchment areas of locations and to compare these with the actual catchment areas or areas of responsibility.

You insert the analysis via the menu Analyses > Circles.

Select data input and connect the data to the map

First, you must select the data basis in which your locations are available.

  1. First select the Table that contains the data to be displayed in the analysis.
  2. In addition, you specify on which sheet and in which map the analysis is to be displayed.
  3. Then check whether the column with the area number (e.g. postal code) from the table corresponds to the corresponding level (e.g. postal code areas - areas) of the base map. The area number is used to assign the individual data records to the corresponding area.
ClosedFurther important information:
  • Via the Advanced button you can specify whether the analysis should consider an existing clip maps in the calculation of classifications - more about Analysis reference.

Set Properties of the Analysis

First of all, the circles in the map have uniform edge colors and radii - they are therefore not influenced by no data column. The color and radius of the circles can now be edited in the opening properties window. Changes of color and radius are applied to all circles.

Control border color and radius from different data columns

Color and radius of the circles can also be controlled by different data columns. To do this, select Edge color or Radius, the Column to be controlled for these properties in the corresponding areas.

ClosedBorder Color

The color of the circles can be differentiated either classified, continuous or via a preset color value (selectable under data evaluation).

  • Classified: You can use classes to specify a schema that determines how these are to be displayed for a range of values. When the analysis is presented, the class in which the value falls is then checked and the presentation of the design characteristic concerned is determined from this.
    • For more information on how to create value classes, see here.
  • Continuous: This option colors the circles without specifying value classes in a continuous color gradient depending on the selected data column. The continuous coloring of the symbols is only possible for number columns. As with the classified option, you can restrict the analysis area, define a gradient or set the color outside the analysis area.
  • Preset: With the option Preset a color value in HTML color definition (e. g. #00FF00) can be retrieved directly from the data.
Closedradius

The radius of the circle can be set in this range depending on a data value classified or proportional (selectable under data evaluation). The Radius of the radius is given in kilometers.

  • Classified: You can use classes to specify a schema that determines how these are to be displayed for a range of values. When the analysis is presented, the class in which the value falls is then checked and the presentation of the design characteristic concerned is determined from this.
    • For more information on how to create value classes, see here.
  • Proportional: The size and width are calculated continuously based on a factor derived from the data values that are analysed. The data value defines...
    • ...height/width: The symbol height and width is calculated linearly taking the data value into account. This implies that the symbol sizes vary rather strongly. More information.
    • ...Surface Area: The symbol surface is generated according to the data value, i.e. the symbols differ less in size. More information.
    • Size/Width: Insert the required size for the symbols here. Thus, you can directly determine the factor that controls the symbol’s size.
    • Dynamic sizing:
      • Preserve ratio: This setting maintains the value entered in the 1.00 cm equivalent to field.
      • Preserve max. symbol size: This setting maintains the value entered in the Maximum field.

Set the size of the circle in kilometers at radius. The perimeter can be a colored fill and a frame color and the frame width of the circle can be determined.

Here you can learn how to adjust the colors for the filling and the frame color.

Let the properties of the perimeters only be controlled by one data column

If you want the color and radius properties of the perimeters to be controlled by one and the same column, you must first link the analysis. The Link Edge Color and Radius function can be found either in the analysis Properties (at the bottom of the Properties window) or in the analysis context menu in the control window Contents. After you execute the command, the structure of the Properties window changes.

ClosedData columns have already been determined for a design characteristic:

If you select this option and have previously selected different data columns for one or more design features, another dialog opens. There you will be asked which classes should be used for coupled classification?

Select one of the three settings offered here that were already defined for color, size, or symbol. In the linked symbol analysis, the system tries to combine the value classes set so far using the data column selected here. Then check the output value classes in the area Display.

Select column

In the area Display a Column can now be selected, which controls the characteristics Edge color and Radius simultaneously. These are combined in a value class list, Number of classes and classification method

In the middle area, enter Classes, the Count for classes, and the method of automatic Classification or set here to User defined to edit your own classes. In addition to Analysis range, you can also specify an interval within which the values are to be taken into account. Values outside the interval always fall into the residual class "unclassified".

Editing Classes

In the lower area you can define the details (value class list) of the analysis. Here you can use various commands to edit value classes and design features.

  • The design characteristics and class boundaries can be edited by double-clicking in the relevant cell.
  • for further information on editing value classes, symbols, colors and sizes, see here.

Determine the details of the analysis

In Details you define other (non-data-dependent) properties of the analysis.For the circles you can, for example, set a fill or set the line width of the circle.

ClosedThe following properties are available:
Visibility
Scale range

Here you can set whether the selected object or plane should be visible at each scale. Or you can specify the scale or zoom level at which the object or layer is visible.
Texts for legends
Class Label

For uniform symbols and circle analysis, you can enter a text for the corresponding legend here. In the legend properties, set the class label to visible.
Shadow
Shadow Color

Specifies the color in which a shadow representation of the object is to be drawn. You can specify the color using the color selection field or directly as HTML color value.

If no color is specified, no shadow is displayed.
Shadow Spacing

If a shadow is displayed to the object, the distance or width of this shadow can be set here.
Common
Comment Enter here a comment for the display of the workbook in EasyMap Xplorer. The comment is also displayed in EasyMap as a tooltip in the control window Contents.

Labeling

In the area symbol text the circles can be labeled. Only the columns of the data table used as the data basis for the analysis can be used for labeling. For example, you can assign a name and location number to the radius for each individual location. In addition, a standard text (e.g. the km specification), which is displayed for all circles, can be entered at user-defined labelling.

Note: How to insert symbol texts and how to influence the display of the texts can be found here.

Tooltip

When hovering over the circles on the map, you can display user-defined information about them. This information can be a great help to identify the displayed circles independently of the label.

Note: You can find out how to implement tooltips here.