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Posted on December 29, 2022 (Updated on July 10, 2025)

QGIS Cloud – partial display of polygons only

Hiking & Activities

How do you make certain features available at specific scales in QGIS?

Scale dependent visibility checkbox to activate the feature, then set the minimum and maximum scale values. You can determine the scale values by first zooming to the level you want to use and noting the scale value in the QGIS status bar.

What is Multipolygon QGIS?

In QGIS they are represented with the QgsGeometry class. Sometimes one geometry is actually a collection of simple (single-part) geometries. Such a geometry is called a multi-part geometry. If it contains just one type of simple geometry, we call it multi-point, multi-linestring or multi-polygon.

Can you draw polygons in QGIS?

Create Vector Data



–Select Edit > Add Features to start drawing a polygon. You can do this by left-clicking on the map to add vertices and then right-click to finish the feature.

How do you change the color of a polygon in QGIS?

3.2.1. Follow Along: Changing Colors

  1. Right-click on the landuse layer in the layers list.
  2. Select the menu item Properties… in the menu that appears.
  3. In the Layer Properties window, select the Symbology tab:
  4. Click the color select button next to the Color label.
  5. Choose a gray color and click OK.

How do you do spatial selection in QGIS?

Using the plugin¶

  1. Start QGIS and load the vector layers regions. shp and airports.
  2. Load the Spatial Query plugin in the Plugin Manager (see The Plugins Dialog) and click on the.
  3. Select the layer regions as the source layer and airports as the reference feature layer.
  4. Select ‘Contains’ as the operator and click [Apply].


How do I show only selected features in QGIS maps?

To show only selected features in a QGIS attribute table, click the filter options button in the bottom right corner of the attribute table. Then choose ‘Show Selected Features’. QGIS filtering options also have other useful presets that may prevent you from even needing a selection.

What is polygon Multipolygon?

A MULTIPOLYGON is a collection of Polygons. MultiPolygons are useful for gathering a group of Polygons into one geometry. For example, you may want to gather the Polygons denoting a group of properties in a particular municipality.

What is the difference between point and multipoint QGIS?

A point has a single x,y coordinate value. A point is always simple. Points have a NULL boundary and are often used to define features such as oil wells, landmarks, and elevations. A multipoint is a collection of points, and just like its elements it has a dimension of 0.

How to create a Multipolygon?

Creating Multipolygon Relations

  1. Select all of the polygons. Remember you can select multiple objects by holding SHIFT and clicking on each.
  2. Choose Tools->Create multipolygon from the menu.
  3. The tags window now contains the new multipolygon.


How does scale affect feature representation?

How Scale Affects Feature Representation. The larger the scale of the map, the better the features that can be detailed. A map that shows the water network of a small area may show the river as a polygon layer and will show the tributaries of that river.
 

Which GIS tool allows you to select features based on their location relative to features in another layer?

The Select By Location tool

The Select By Location tool lets you select features based on their location relative to features in another layer.

How do I filter features in QGIS?

Filtering

  1. In the Layers Panel, double-click on the layer you wish to filter. The Layer Properties window will open.
  2. Click on the General tab.
  3. Go to the Query Builder at the bottom right and click on it. You can now enter a Query.
  4. Click on OK and then on OK again.

 

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