## Concentration / Display / Pointer Select

The Windows-only concentration data point registration program is designed to read the binary concentration data file, display the data on the screen, and then use the mouse as a pointer device to pick locations at which the position and concentration data are read and written to the text file: wincpick.txt. The concentration data are displayed over the entire grid domain. There are no zoom options. If you want to zoom in on a specific area, then it is necessary to rerun the model with a smaller concentration grid domain. The program is available from the GUI or the command line with the following syntax: wincpick [input file name]. The GUI menu, which is shown in the illustration below, only permits selection of the concentration input file name, which must have been previously defined in the Concentration Setup menu.

Upon startup, wincpick will display the domain background map with a summary of the mouse-based instructions: left-click registers the latitude-longitude position of that point to the output file wincpick.txt. A right-click of the mouse redraws the map for the next time period and at the end of the input file saves and closes all files; and a CNTL-right-click closes all files and exits the program before the end of the input file. Right-click the mouse to go to the first concentration map. Maps are drawn in sequence of height, pollutant species, and time. Left-clicks register the position of the mouse to the output file. If you are interested in only one time period, skip past those times by a right-click, register the points of interest, then CNTL-right-click to exit. An illustration of the first output period from the sample calculation is shown below.