Advanced functions
This functions are represented by Analysis group buttons on Tools panel (chapter 2.4.1,fig.1-3).


Distance measurement Distance This tool allows to measure distanse along line or poly-linte To perform measurement click on the map at start point, holding mouse button pressed, move cursor to the next point and right click to add poly-line point or release left mouse button to get the result. The result vill be shown on the Information bar on the Map view panel.
Area Area This tool allows to compute area of the selected features for polygons and rasters. The result is shown by means of information window.
Buffering Buffering This tool allows to compute simple or circule buffers. Buffering button calls Buffered Area Creator.
Overlay Overlay This tool allows to perform overlay operations with two vector polygonal layers. Calls Overlay creator.
Calculator Calculator This tool allows to perform different operations with raster layers. Calls Calculator dialog.
Rasterizator Rasterizator Allows to rasterize active polygonal vector layers. This button calls Rasterization dialog.
Cut selection Cut selection
Task's order
Creates a new layer which consists of the selected objects of the active layer. Calls Specify layer name dialog.
Split check box is used to turn on separation of multi-polygons to separate polygons.

Buffered Area Creator

This tool allows to compute simple or circule buffers. Buffered area may be created for selected area of the active layer if it exists or for the entire layer if no selection exists.
Buffered Area Creator
Fig.1
Layer name. Dialog shows layer name for wich buffering task is performed by the user.
Buffer size determines the size of the future buffer area. To create simple buffer(fig.2-a) specify left size as 0 and right size as you need. To create circular buffer(fig.2-b) specify both left and right size as you need.
OK button. Sends buffer creation task to execution. The task will take some time. At the bottom of the application window will appear Task's order panel(fig.3). After selecting the desired task in the Task list and clicking Refresh button you will get the resulting layer, if the execution is completed.
Cancel button. Cancels the buffer creation operation.
Buffers
Fig.2
Task's order
Fig.3

Overlay creator

This tool allows to perform overlay operations with two vector polygonal layers.


Overlay creator
Fig.4
A - First operand. Select layer from drop down Layer list(1) , then select attributes of the selected layer from Attribute list(2). To perform multiple attribute selection use Ctrl key.
B - Overlay operation. Select from Operation(4) drop down listneeded operation type. You can use operations: Intersect, Join and Substruct. Split multi-polygons(3) check box is used to turn on separation of multi-polygons to separate polygons.
C - second operand. Select layer from drop down Layer list(6) , then select attributes of the selected layer from Attribute list(5). To perform multiple attribute selection use Ctrl key.
OK button. Performs overlay operation. The task will take some time. At the bottom of the application window will appear Task's order panel(fig.3). After selecting the desired task in the Task list and clicking Refresh button you will get the resulting layer, if the execution is completed.
Cancel button. Cancels overlay operation.

Calculator dialog

This tool allows to perform different operations with raster layers.


Calculator
Fig.5
1 - Exspresion. Displays exspression to calculate.
2 - Raster layers list. List to select raster layer to add to exspression.
3 - Add button. Adds selected in Raster layers list layer to exspression.
4 -Operations buttons. This buttons add operations to exspression. "=" button starts calculation.
As the result you will get a new raster layer.

Rasterization dialog

Allows to rasterize active polygonal vector layers.


Rasterization
Fig.6
1 - Raster cells values provider. This list consists of numeric attribute for layer. Select one of them to get raster layer with it's values.
2 - Number of cols and rows. Determines the size of new raster layer.
OK button. Performs rasterization operation. As the result you will get a new raster layer.
Cancel button. Cancels rasterization operation.