The 1d Coordinate Posting window provides a map of coordinate locations. The location of each data point in the active data set is marked by a symbol corresponding to its relative value. Both the number of levels displayed as well as the range for each level is user-defined. A similar window provides postings for 2d data.
Data may be grouped in one of three distributions:
• Quantiles – in which Z data are placed into groups of equal frequency, i.e. into groups that have the same number of sample values. Quartile distributions are divided into 4 groups, percentiles into 100 groups, etc.
• Intervals – in which Z data are placed into groups based on even intervals of the data range, without regard to how many sample values are placed in each group.
• Custom – in which you can define how groups are formed.
Note that this coordinate posting is different from the posting available from the Map Window. The Map Window posting uses data saved with the interpolation file; this posting uses non-missing data in the current Data Worksheet.
Set the Number of levels (corresponding to different symbols) to any value between 1 and 10. For values of 1, the legend will be suppressed.
Set the Type of level to correspond to how symbols are assigned to locations. Quantiles divide the domain into an equal number of sorted values per level. In the example above (quartiles), there are as many values greater than the median of 6.7 as there are less than 6.7.
Choose Intervals to divide the range into even intervals, e.g. in the example above, in which values range from –17.8 to 27.7, choosing Intervals would divide the data range of –17.8 – 27.7 into 4 levels: <-6.4, <5.0,< 16.3, and <27.7.
Define provides the opportunity to define custom intervals and set symbol size, color, and shape.
• Off – returns the mouse to normal operation.
• Move – allows the graph to be moved within the window by clicking the left mouse button and dragging the cursor.
• Scale – shrinks the graph image with the left mouse button.
• Zoom – allows you to zoom in on a particular graph area by using the left mouse button to define a rectangular zoom area. Within the zoomed area the location of the cursor is noted on the Mouse Location panel.
• Reset – resets the image to the default rotation angle and scale.
You may Print, Copy, Edit, Export, or List graph values for either graph using the menu commands of the main GS+ window, or via a right-click menu.