AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |
Back to Blog
![]() ![]() A value of -2.38 would be dark red, and so on. So, if a polygon in my feature class has an elevation change value of 1.48, it would be filled with a medium green color (because it falls within the range of 1.00 to 1.99). Here's an example that might make this easier to understand: What I'd like to do is to use a lookup table to assign specific colors to specific ranges of elevation changes. However, it's not possible to assign the colors of a colorramp to a specific range of elevation change values, which is what I need to do. I can do this using a colorramp that grades from green to red. I want to assign a color to each polygon based on the polygon's elevation change value, such that positive changes would be shown in shades of green, and negative changes would be shown in shades of red. The feature class has a numeric field that contains elevation change values (example: 1.23, -4.56, etc.) So for example, a value of 1.23 indicates that the surface elevation increased by 1.23 meters, and a value of -4.56 indicates that the surface elevation decreased by 4.56 meters. Experiment with your own to find out what is most useful for your own data.I have a polygon feature class that represents the elevation change of the surface of a glacier. In other words, the region where the dark orange is observed experienced earthquakes more than once.īuffer Art can be applied to many situations such as around parcel lots, around road or highway lines or even creating them to find intersection proximity between map features. You can see the darker color when the buffered art overlaps each other. Also, the graphic style selected for the buffer art had some level of transparency applied. The Attribute Value option is chosen and the Buffer Circle field for the Buffer Width.Īs a result, every buffered area (circle) has a different size. Now, the Buffer Art feature will be performed with those calculated values for the buffer width. Those values under the Buffer Circle column will be used for the buffer width. Earthquakes that occurred at shallower depths will as a result have a larger buffer width. The size of the buffer width was calculated based on the depth of the earthquake for every point in the layer. I have one MAP Point layer with the point information of earthquake epicenters from 2011. I will use another point layer this time. As a result, you can see that a concentric ring is drawn every 300 km from the epicentre.Īpplying values from an Attribute Column for the buffer width (Creating Graduated Symbols for every point) It will generate seven concentric circles within the 2100 km buffer. I am selecting 300 Kilometer for each concentric circle distance. This option will generate evenly spaced rings around the points within the buffered area. Lastly, I enabled the Add concentric circles every: option. įor the buffered area, a pre-designed graphic style will be applied. The buffered art will be placed in the existing destination layer Buffered Area. I specified a value of 2100 Kilometer as the distance to buffer from the epicentre (the origin of the earthquake). I have one MAP Point layer with a location of a magnitude 6.2 earthquake recorded SSE of Pondaguitan, Philippines on September 29th, 2019. Buffer Art allows you to enter one fixed value to either all or the selected art in one layer or the values from an attribute column in one map layer.Īpplying a static value for the buffer widthīelow is the new Buffer Art dialog box. Buffer Art can be performed on both Line and Point layers. ![]()
0 Comments
Read More
Leave a Reply. |