GeoMapApp© Help
Viewing Available Data - Tables
The Available Data window allows you to choose from our menu of existing datasets.You may use the Search bar to locate data by any keyword. As we add new datasets, they will automatically appear in this menu when you run GeoMapApp. A recent (August 2007) count showed over 100 diverse datatypes available through Tables, Layers and NSF Focus Sites.
General Data Viewers - Tables
Select dataset of interest and click Ok. The data file will load into the Custom Databases window, then click Ok.
When you click Ok, the configure window will pop up with options for selecting (using column labels in the first record) which columns in the data table contain latitude and longitude, as well as for the size and color of the symbol for plotting on the map. By default, the program reads the column headers in your data table and tries to identify which columns to use for longitude and latitude. Users may override the default choices.
After you set the configuration settings and click Ok, the locations of points in the data table will plot in the main map window; the data table will be displayed below it. Selecting any row in the Data table will highlight that point on the map. Similarly, clicking on a point on the map will highlight it in the data table. Only the points currently visible in the main map window are shown in the Data table window. You can also use your cursor to lasso a series of points in map view to highlight them in the data table.
Use the Color Symbols and Scale Symbols buttons located to the right of the map window to color symbols based on the values within any column of your data table. In the example shown below, we have colored the digital plate boundaries from Peter Bird, G-cubed 2003, by plate boundary velocity in mm/yr.
Use the Color Palette Tool to customize the coloring of the data points. You can customize the colors by dragging the vertical bars on the color histogram or clicking the color button you wish to change and adjusting the H-S-B sliders.
Try the Graph option to make plots of any two parameters in your data table. In the example below we have loaded the Global Heat Flow dataset from Dallas Abbott available from the General Data Viewers => Geophysical Datasets menu and plotted recalculated heat flow versus basement age. Any points you select in the map view or in the data table will be highlighted in the graph and vice versa. You can use this feature to identify, for example, outliers in the data set.
If you load more than one dataset, you can toggle between them to custom color and graph values in each dataset. The name of the currently active dataset appears in the menu to the right of the main map window.
Pressing Save or right-clicking within the graph window brings up a menu with several choices: Save Graph Data to clipboard, text (ascii) or Excel spreadsheet;Save Graph Image in JPG or PNG format; or Print. When finished, close the graph and press the Close button to the right of the Main Map Window to clear memory.