How to create an overlay for visualizing your own geographical vector information: Difference between revisions

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You can visualize vector data as an overlay in your project using an [[Area Overlay]]. To do so, upload your data as [[Area]] with an [[Attribute]] indicating what the polygon represents. Each area has an attribute the value of which identifies which of the areas should be shown in the same color. Then set the colors for those areas to recognizable colors, based on what the value of their attribute is. Finally, add those areas to an overlay to visualize them.
You can visualize vector data as an overlay in your project using an [[Average Overlay]]. To do so, upload your data as [[Area]]s with an [[Attribute]] indicating what the polygon represents. Each Area has an Attribute the value of which identifies which of the areas should be shown in the same color. Then set the colors for those areas to recognizable colors, based on what the value of their attribute is. Finally, add those areas to an overlay to visualize them.


'''1: Upload your data as areas'''
{{editor location|areas|dropdown=Import geo data}}
{{editor location|areas|dropdown=Import geo data}}
{{howto|title=upload your data as areas
{{howto|title=
| Prepare your data as a [[GeoJSON]] file. Make sure all areas have an identically named attribute, with a value which is the same for all areas which should have the same color.
| Prepare your data. Ensure all features in the file have an [[Attribute]] with a name for each resulting [[Area]], as well as an [[Attribute]] with a differentiating value.
| Open the Geo Import wizard. [[Geo Data Wizard|Follow the steps]] to load in your file as Areas.
| Open the [[Geo Data Wizard|Geo Import Wizard]], and follow the steps to load the data in as Areas.
| Add an [[Average Overlay]].
| Set the input layer to the specific layer "AREAS".
| Set the averaging distance to 0.
| Set the Attribute to average to the Attribute which has the relevant differentiating value.
| If necessary, [[recalculate]] the Session.
}}
}}


'''2: Set the color of your uploaded areas'''
{{article end
{{editor location|areas|dropdown=Edit multiple attributes}}
|notes=
 
* To adjust the colors of the resulting Overlay, edit the [[Legend]] of the Overlay. The colors of the [[Area]]s themselves are not used.
{{howto|title=set the color of multiple areas at once
* The differentiating value in the [[Area]]s can either be a numerical value (such as amount of inhabitants), or a Nominal value (such as representing inhabitant typologies)
| Open the "Edit multiple attributes" window for Areas.
|seealso=
| In the top half of the window, activate the "Attribute" filter and the "Value filter" by checking the checkboxes.
* [[Area]]
| For the attribute filter, select the attribute which represents the data you wish to base the area's color on.
* [[Average Overlay]]
| For the value filter, set the dropdown to "x=" and the value to the numeric value for which you wish to set a color.
* [[Geo Data Wizard]]
| For the "Attribute to be changed", select "COLOR"
| For "New value for attribute", check the "Color" option.
| Use the now available color selector to select the desired color.
| Select "Set value" to set the colors.
| For eachpossible value of the attribute, repeat setting the "With value" and the new color, and then selecting "Set Value"
}}
 
'''3: Add an area overlay visualizing the areas'''
{{editor location|overlays|dropdown=Add areas}}
 
{{howto|title=add and configure an Area Overlay
| In the "Overlays" dropdown, select "Add area". A new overlay is now added to the project and selected.
| At the bottom of the right panel, select "Add Areas with attribute". The "Add areas with attribute" window will open.
| Select the attribute of your Areas, and select "OK".
| All Areas you want to visualize are now shown by this overlay.
}}
}}


[[Category:How-to's]]
[[Category:How-to's]]

Latest revision as of 11:39, 10 May 2024

You can visualize vector data as an overlay in your project using an Average Overlay. To do so, upload your data as Areas with an Attribute indicating what the polygon represents. Each Area has an Attribute the value of which identifies which of the areas should be shown in the same color. Then set the colors for those areas to recognizable colors, based on what the value of their attribute is. Finally, add those areas to an overlay to visualize them.

Editor → Current Situation (Ribbon tab) → Areas (Ribbon bar) → Import geo data (Dropdown)
How to create an overlay for visualizing your own geographical vector information:
  1. Prepare your data. Ensure all features in the file have an Attribute with a name for each resulting Area, as well as an Attribute with a differentiating value.
  2. Open the Geo Import Wizard, and follow the steps to load the data in as Areas.
  3. Add an Average Overlay.
  4. Set the input layer to the specific layer "AREAS".
  5. Set the averaging distance to 0.
  6. Set the Attribute to average to the Attribute which has the relevant differentiating value.
  7. If necessary, recalculate the Session.

Notes

  • To adjust the colors of the resulting Overlay, edit the Legend of the Overlay. The colors of the Areas themselves are not used.
  • The differentiating value in the Areas can either be a numerical value (such as amount of inhabitants), or a Nominal value (such as representing inhabitant typologies)

See also

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