JMap Cloud
English
English
  • Welcome to JMap Cloud documentation
  • JMap Cloud Portal
    • JMap Cloud Portal User Guide
      • Introduction
        • Accessing JMap Cloud Portal
        • User Interface
        • Dashboard
      • Roles
      • Functions Reserved for Administrators
        • Managing the Organization
          • General
          • API Keys
          • Members
          • Invitations
      • Connecting Data: Data Sources
        • Creating Data Sources
          • Vector/Raster Data Files
          • Non-spatial tabular data files
          • WMS/WMTS Service
          • Vector Tile Service
          • Feature Service
        • Status of a Data Source
        • Managing Data Sources
          • Displaying and editing information
          • Updating data
          • Permissions
          • Removing a spatial data source
        • Uploading Files
      • Organizing Data into Projects
        • Creating a New Project
        • Managing a Project
          • Open the Project
          • Editing a project
          • Permissions
          • Getting the project's public link
          • MVT Cache
          • Deleting the project
      • Configuring Project Content
      • Jobs
  • JMap NG
    • JMap NG User Guide
      • Introduction
        • Connecting to JMap NG
        • User Interface
        • Navigating on the Map
        • Profile and user settings
      • The Data
        • The Layers Panel
        • Data Layers
          • Displaying layers
          • Thematics
          • Layer Information
          • Geographic Extent of the Layer
          • Making layer elements selectable
      • I Wish to...
        • Display Element Information
        • Select Elements on the Map
        • Measure Distances and Surfaces
        • Add Annotations to the Map
        • Export / Print a Map
    • JMap NG Developer Documentation
      • Startup Options
      • Extensions
      • Examples
        • Start the JMap NG Core library
        • Start the JMap NG App
        • Add a JMap NG App extension
        • Toggle a JMap layer visibility
        • Add a layer to display custom data from GeoJSON file
        • Locate and select features by attribute query
        • Add an event on move end
        • Add attributions on the map
        • Locate and select feature by id
        • Locate and select feature(s) by location
        • Custom mouseover on a layer
        • Create a custom form in a div
      • Changelog
  • JMap Cloud API
    • JMap Cloud API Documentation
  • JMap Cloud Plugin for QGIS
    • JMap Cloud Plugin User Guide
      • Installing the plugin
      • Connecting to JMap Cloud
      • Opening a project
      • Editing features
      • Exporting a project
Propulsé par GitBook

K2 Geospatial 2023

Sur cette page
  • The Measurements panel
  • Measurement tools
  • Distance
  • Surface
  • Circular surface
  • Modifying measurements
  • Modifying the shape of a measurement
  • Moving measurements
  • Deleting measurements
Exporter en PDF
  1. JMap NG
  2. JMap NG User Guide
  3. I Wish to...

Measure Distances and Surfaces

PrécédentSelect Elements on the MapSuivantAdd Annotations to the Map

Dernière mise à jour il y a 1 an

The tools found in the Measurements panel allow you to measure distances and surfaces (area and perimeter) on the map.

The Measurements panel

The Measurements panel contains the application's measurement tools.

  1. Click on to open the Measurements panel. The icon changes color .

    1

    Tools to measure distances.

    2

    Tools to measure surfaces.

    3

    Tools to measure circular surfaces.

    4

    Tools to: - Indicate the number of measurements performed, - select measurements to edit or delete them, or - delete all measurements.

    5

    Instructions on how to make measurements.

  2. Select the measurement tool you wish to use by clicking on its icon. The icon changes color. The section explains the features of these tools and how to use them.

  3. Make your measurements. You can use the different tools; the measurements will all be added to the map, and the distances and/or areas measured will be displayed in the card of the corresponding tool. The total number of measurements made is displayed in the panel.

Measurement tools

Several tools allow you to take measurements. They are described below.

Distance

  1. Click on the map once to begin your measurement.

  2. Click on the map to define the vertices of the line.

  3. Double-click or click on the space bar to complete your measurement. The length of each segment and the total length of the line will be displayed in the map. The total distance is also displayed in the Distance card.

  4. Repeat the measurements, as needed. The lines are displayed in the map, and the total distance of all the lines is displayed in the Distance card.

Surface

  1. Click on the map once to begin your measurement.

  2. Click on the map to define the vertices of the polygon.

  3. Double-click or click on the space bar to complete your measurement. The length of each segment, perimeter, and surface of the polygon will be displayed in the map. The surface of the polygon is also displayed in the Surface card.

  4. Repeat the measurements as needed. Polygons are displayed in the map, and the total surface of all polygons measured is displayed in the Surface card.

Circular surface

  1. Click once on the map to define the center of the circular surface you intend to measure.

  2. Slide the mouse pointer on the map to define the circle's radius.

  3. Click on the map or press the space bar to complete the measurement. The radius, circumference, and area (or surface) of the circle are shown in the map. The surface is also displayed in the Circular surface card.

  4. Repeat the measurements, as needed. The circles are displayed in the map, and the total surface of all measurements (circles) is displayed in the Circular surface card.

Modifying measurements

You can change the shape and location of measurements or delete them. You can only modify the shape of one measurement at a time. You can modify the location of or delete several measurements at once.

Modifying the shape of a measurement

  1. Click on Select to select the measurement you wish to modify. The button changes color.

  2. Select the measurement you wish to modify by clicking on it. The vertices of the line, polygon or circle are displayed.

  3. Select a vertex by clicking on it to move it. The vertex turns black.

  4. Drag and drop the vertex to the desired position to change the shape of the measurement.

  5. Click on the map to finish modifying the shape of the line, polygon or circle.

Moving measurements

  1. Click on Select in order to select the measurements you wish to move. The button changes color.

  2. Select a measurement by clicking on it. The vertices of the measurement are displayed.

  3. Press and hold the SHIFT key, then click on the other measurements to add them to your selection.

  4. Drag the mouse pointer to move the measurements, and drop them at the desired location on the map.

  5. Click on the map to unselect the measurements.

Deleting measurements

  1. Click on Select to select the measurements you wish to delete. The button changes color.

  2. Select a measurement by clicking on it. The vertices of the measurement are displayed.

  3. Press and hold the SHIFT key, then click on the other measurements to add them to your selection.

  4. Click on the Delete button, which displays the number of selected measurements in parentheses. The selected measurements are deleted.

This tool allows you to measure distances. The measurement unit in which the distances are expressed is selected in the .

Click on the icon to enable the tool. The icon changes color. Instructions appear at the bottom of the map to help you make your measurements.

Click on in the Distance card to delete the lines.

This tool allows you to measure surfaces by drawing polygons. The measurement unit in which the surfaces of polygons are expressed is selected in the .

Click on to enable the tool. The icon changes color. Instructions appear at the bottom of the map to help you make your measurements.

Click on in the Surface card to delete the measurements.

This tool allows you to measure surfaces by drawing circles in the map. The unit of measurement in which the surfaces of circles are expressed is selected in the .

Click on the icon to enable the tool. The icon changes color. Instructions appear at the bottom of the map to help you make your measurements.

Click on in the Circular surface card to delete the circles.

user settings
user settings
user settings
Measurement tools