Map Mode
After starting the application or selecting Map
mode you will be presented with the following screen.
Map
Map can be adjusted by:
- Scrolling - alters the scale of the map
- Mouse drag - alters the position of the map
Control panel
Every viewing mode has its own control panel.
Geo projection
Geographic projection can be changed using list box on the control panel.
Load data
This button will open dialog for selecting source file. Binned matrix data are supported.
Load parameters
This button will open dialog for selecting file with parameters.
Export
These list buttons are used for exporting images from the application.
- SVG - Exports image to vector format. Please note that the file size may be huge.
- PNG - Exports image to PNG format. Resulting images is scaled twice the current size. Please note that export to PNG may take a while.
Contour
This list box sets whether to show contour lines or not.
Binning
This list box sets what type of bin size was used on the input data.
Neighbors
This input changes the number of neighbors used in KNN regression algorithm used to impute missing data and clean errors.
- When set to 0, data will not be pre-processed.
Smooth
This input changes the smoothing variable in KNN regression algorithm. High smoothing factor means points closer to source have far bigger influence.
- When set to 1, influence is linear.
- When set to 0, missing data will not be imputed.
Clean diff
This input changes the threshold used in data cleaning. If a point differs from predicted value by given threshold, the point will be cleaned.
- Uses log units
When set to 0, data will not be cleaned
Generate Map
When all parameters are valid and data loaded a map can be generated. Application performs these steps:
- Load file contents
- Clean data
- Impute missing values
- Compute Voronoi regions
- Project those regions
- Draw
This process may take a while. When you move the map after it has been generated the map will reset and you have to Generate Map
again.
Live cursor
When the map is generated you can hover over the displayed bins to get more information.
- Value - Value of the bin in log units
- Type - Whether the bin was imputed, cleaned or it is the original value.