Cubizen

Today, we will explore one of the most frequently used functions in Global Mapper: the Split tool. This feature allows you to separate elements within a single layer into multiple distinct layers based on specific criteria. It is highly versatile and can be used with any vector layer or mixed vector layers containing various geometry types. First, let's open the file we worked on in the previous session. Looking at the Control Center, you can see various layers including points, lines, areas, and meshes. Executing the Split Function In this example, we will perform the split operation on the Point layer. Right-click on the target layer in the Control Center and navigate to the split option as shown below. Once selected, a window will appear asking you to choose the criteria for splitting. Selecting the Attribute to Split On The "Select Attribute to Split On" dialog provides several options to determine how your data will be organized into new sub-laye...

  Today, we will explore a function that is essential for any GIS program: joining a CSV file to a vector layer (points, lines, or areas). Open your previous file and download the CSV file below. Attachment: table.zip   (This is a safe proprietary data file for Global Mapper.) The file above is quite simple, containing 'name' and 'value' columns. Since we have six points, I've created six records. Our goal is to compare the  Name  of the point features with the  name  field in the CSV file and add the corresponding  value  as an attribute to each point. Right-click the point layer and select  JOIN - Join Attribute Table/File to Layer . A window will appear asking you to select the layer to join. Select "Point" and click OK. The options window will then appear. Join Options Breakdown: File Name : Specify the CSV file you wish to join. Join File Delimiter : Select the delimiter used to separate data in your file. (In this case, it's a Comma). J...

Today's menu is about the  Point Layer . The following four items are what differentiate point layers from elevation or raster layers, and they are commonly used in all vector-attribute layers: Calculate/Copy Attribute Value(s)... JOIN - Join Attribute Table/File to Layer Create Label Layer... SPLIT - Split Into Separate Layers Based on Attribute Value... Open the file from our last session and activate the point layer. Before we dive into the menu, let's assign a name to each point. Select the  Digitizer Tool (Alt+D) . Starting from the point at the top-left of the screen and moving clockwise, we will name them 1 through 6. Double-click a point to bring up the  Modify Feature Info  window. Enter "1" in the  Name  field and click OK. Repeat this for the other points, numbering them 2 to 6. The names we entered are now visible next to the points. (I will cover label display settings in more detail in a later post.) Today, we will try the  Calculate/Copy...

Today, we will cover the context menu for  Raster Layers . Open your previous project and activate the 'Image' layer. Let's look at the menus applicable to raster layers. You'll notice they are similar to those of elevation layers, but a few items are missing: Create Workspace File from Selected Layer(s)... EXPORT - Export Layer(s) to New File... MAP CATALOG - Add Selected Layer(s) to Map Catalog... BBOX/COVERAGES - Create Layer Coverage Box/Polygon Area Features Create Area Features from Equal Values... Vectorize Raster Link External Metadata File Save List of Layers to Text File... Set Background Color for Layer in Control Center The usage is mostly the same as with elevation layers, so let's focus on  Create Area Features from Equal Values...  for images. 1. Create Area Features from Equal Values (Raster) After selecting the layer and clicking OK, the setup screen appears. Here, you'll focus on  Color Fuzziness  instead of elevation. Maximum Match Distance : ...

We continue exploring the Elevation Layer context menu. 1. Create Area Feature from Equal Values... This function can be used for both elevation and raster layers. It groups elements with the same values into a single polygon. When you run  Create Area Feature from Equal Values... , a list of compatible layers will be displayed. Select the elevation layer and click OK. A detailed setup window will then appear. Layer Description : Sets the name for the new layer to be created. Value Attribute Name : Sets the attribute name that will store the elevation value for the generated polygons. Set up Allowed Color Fuzziness : This applies to raster layers, which we will cover later. Set up Allowed Elevation Fuzziness : This is specifically for elevation layers. Maximum Match Distance : This represents the $\pm$ range value. For example, if you enter "5", it will group elevation values within a $-5$m to $+5$m range into a single polygon. This means the resulting polygon will represent ...