A task that is always interesting is one that utilizes raster data. For this week's assignment at UWF, we were to create an isarithmic map using precipitation data from Oregon State University.
More information is found in the map below:
In this lab, we once again experimented with the different classifications. The best representation for this data to be separated into 10 classes was the Natural Jenks, and I rounded the numbers to properly represent the elevation values of the contour lines.
For symbolization of continuous data, such as elevation, its best to use data with smooth gradual changes. For this map, we included a hypsometric tint, which uses "steps" to create a similar appearance to graduated colors, with colors separating the contour lines. This works well for a landscape layer showing precipitation, and a color ramp labeled as "Precipitation" was easy to find and apply. It seems that the most important element is the classification, as everything else varies off that result.
Additionally, we added a hillshade to this map to show 3D elevations on the surface. This grayscale gradient worked as an underlay, with the tint on top, showing the relationship between the region's elevation and precipitation. It was somewhat tedious to set the color values and I was happy to have guidance for that part.
For symbolization of continuous data, such as elevation, its best to use data with smooth gradual changes. For this map, we included a hypsometric tint, which uses "steps" to create a similar appearance to graduated colors, with colors separating the contour lines. This works well for a landscape layer showing precipitation, and a color ramp labeled as "Precipitation" was easy to find and apply. It seems that the most important element is the classification, as everything else varies off that result.
Additionally, we added a hillshade to this map to show 3D elevations on the surface. This grayscale gradient worked as an underlay, with the tint on top, showing the relationship between the region's elevation and precipitation. It was somewhat tedious to set the color values and I was happy to have guidance for that part.
Once again I am happy to say that I did not have any major trouble with this project. It was an enjoyable and enlightening set of data to work with. This was a fun map to create, and I look forward to working with more raster data in the near future.
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