442: X Loadings and Scores

If gridded or station data are used, a map of the spatial loadings for each mode is shown, together with the temporal scores. If the data are unreferenced, a bar chart of the loadings is shown instead. The loadings are shown in the form of correlations between the original gridded/station/index data and the temporal scores. The results can be saved to an output file from the Modes tab in File ~ Output Results , but the actual loadings are saved rather than the correlations shown in the map. The graphics for each mode can be cycled by using the arrows at the top left of the graphics window, or by typing in the requisite number. Depending on your computer speed, you may need to wait a short time for the new graphics to display.

The map and graph titles can be set using the Customise option upon right-clicking in the child window. There is some flexibility to adjust the colour scaling on the map: the colour bar limits can be set by right-clicking on the image and then selecting the Customise ~ Contour Limits option. A window opens that indicates the assumed maximum and minimum data values when setting the colour intervals and number of colours. These values can be reset, which will in turn automatically reset the colour interval and number of colours. Similarly, the y-axis limits on the graph can be set by right-clicking on the image and then selecting the Customise ~ Y-Axis Limits option. Resetting these axis limits will in turn automatically reset the tick-mark interval and number of tick marks. Greater flexibility for setting the colour scaling and tick marks is planned for future releases. Further options for customising the maps and graphs are available from Options ~ Graphics .

The maps and graphs can be saved as graphics files, individually or as a montage, by right-clicking anywhere in the child window and selecting Export from the pop-up menu. A default name is given to the graphics file, but this name can be changed using the browse button. The image quality for all the graphics formats can be improved by increasing the size of the image (see Options ~ Graphics ~ Graph Scaling ).