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Creating Points, Polygons and Polylines in Arcgis | Basic Digitization

how to make points in arcgis

Until now, this is the 4th note which is the 3rd part of the discussion about Arcgis, delivered by an arcgis tutor, the person has been mentioned in the notes of the first part.

Notes : For those of you who have just seen this note, it’s a good idea to start with the first part which discusses the most basic stages of using Arcgis and the second part about how to georeferencing / tie points in Google Earth Pro.

Basic Arcgis Part 1

In order to make it easy to understand, only the gist will be written, clearly, concisely and concisely. It will be easier to understand if it is practiced simultaneously by opening ArcGIS while reading this article.

What are Points, Polygons and Polylines in Arcgis Operations?

Point in general is a point, in the world of digitization Arcgis, point is always identical to the point coordinates. When doing the digitization process, the user will very often meet with the process of determining the coordinates or pointing.

polygon is a set of points that produce a projection of a certain area or region. When the digitization process takes place, usually polygons are used to create boundaries between certain regions or areas, for example boundaries between provinces, districts and villages.

polylines; its function is more to the process of making lines. The line itself in mapping is more often used as a symbol of roads and rivers.

Notes : these three are the most important and most basic part when digitizing activities take place.

The picture above is an example of the use of points, polylines and polygons. The map itself is the result of Google Earth Pro images.

The table of content section looks for its own use: where points are for certain coordinates, polylines are labeled “streets”, and polygons are labeled “residentials”.

label peta_lahan2 under it there is a point symbol, a street with a polyline symbol and a settlement of 12 polygons forming a rectangle.

These three symbols represent their respective functions, if you want to digitize the path, then the most important thing is to organize the file in the Catalog, how to do it:

Catalog Dialog Box Settings

  • Open the catalog, specify the storage folder
  • right click on the folder
  • Select New
  • ShapeFile

Then a shapefile dialog box will appear, in the feature type section, there are options; Point, Polyline, Polygon and so on. Since here we want to digitize the axis path, so the feature type setting is set to Polyline. (Spatial Reference related to locking coordinates according to each region, there are already notes in sections 1 and 2, there is even a list of WGS 1984 Indonesian UTM zones that was posted earlier, you can check it yourself)

Likewise, if you want to make points and polygons, just set them to the Feature type. Once set, press Ok. Then this shapefile will appear in the table of content. What is next ?

Start Creating Points, Polygons and Polylines

The table of content already contains point shapefiles, polygons, polylines, maps (already tied with coordinates), it means that this process can be done.

Notes : Here we use the ArcGIS display reference in the top image that has been digitized in the form of polylines and polygons.

  • When you want to process the view dialog box (the one with the map, it’s clearer in the arcgis section you can open the notes for part 2), always start with “START EDITING” (on the toolbar there is an editor option, click the down arrow; select start editing) then select one of the shapefiles in the table of content, for example “street”
  • When the “street” shapefile is selected, it will simultaneously be displayed in the “Create Features” dialog box on the right.
  • When the “street” view in Create Features is clicked, at the bottom the “Construction Tools” dialog box will appear.
  • In the “Construction Tools” dialog box there are line options and so on, because this is related to road digitization, so we choose “line”
  • The next step is to digitize the road, by drawing a line on the road on the map.
  • When you are finished and want to switch to polygons or points, you only need to click on one of the shapefiles, then click again on the view that appears in Create Features, then proceed to Construction Tools.

Creating Polygons in Arcgis | Basic Functions and Applications | Map Digitization

Closing

The notes above are related to the basics of digitizing the application of points, polygons and polylines in outline, so at least you can understand the basic functions. In the notes section 4 will contain a discussion of how to fix errors that occur during the process of implementing the three, as well as additional functions.

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