In this document we will walk you through the process of making a simple 3D KML / KMZ document for Google Earth using Graph Earth.
Entering the Data
For this first project, we will generate a Prism graph using state population data from Wikipedia. In this example, we are only entering five states, however, you could just as easily create a graph for every state in the United States. Simply enter the values seen in the image below, with state names in the 'A' column and population in the 'B' column. If you wish to graph the population of every state, the necessary data can be found by clicking here.
Organizing Our Data
Although Graph Earth may look a lot like spreadsheet applications such as Microsoft Excel or Apple Numbers, it doesn't always work like one. Unlike these applications, Graph Earth has the capability to name columns. Naming columns makes it easier for us to choose correct options in future dialogs without having to look back at our sheet.
To name a column simply:
Repeat these steps for both the 'A' and 'B' columns.
Creating the 3D Graph
Once we have all of our data entered, we can begin configuring our graph. Simply click Graph -> Prism to bring up the 'Create Prism Graph' dialog.
Once the dialog appears:
There are a number of options that will affect the visual style of your 3D graph. Feel free to play with these options. If you wish to change the default options for Legend, Title or Logo, click the 'Legend / Title' button. This will bring up the 'Lgend / Title / Logo' dialog with a number of options. At any time, you can see a preview simply by clicking on the 'Preview' button. As you make changes, this preview will change to reflect your alterations in real time. When you are done, simply click 'Ok' to accept the changes.
Generating your Google Earth KML/KMZ Graph
When you feel you are ready to create your graph, simply click 'Create Graph' in the 'Create Prism Graph' dialog. If you accidentally hit close, your selections will automatically be saved. Once the KMZ file has been created by Graph Earth, your default KML / KMZ viewer (Google Earth) will be launched automatically. Your final graph should consist of a kmz file approximately 140k in size and look very similar to the image below.
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