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Zooming 2 Layers in WebMap with ArcGIS using Python?

VitorRibeiro

I am using the ArcGIS library in Python.

I was able to create a WebMap with the command

<SPAN class="" style="color: #2b91af; border: 0px; font-weight: inherit; font-size: 13px;">WebMap</SPAN><SPAN class="" style="color: #303336; border: 0px; font-weight: inherit; font-size: 13px;"> </SPAN><SPAN class="" style="color: #303336; border: 0px; font-weight: inherit; font-size: 13px;">()</SPAN>

I added some Layers on it with the command

<SPAN class="" style="color: #303336; border: 0px; font-weight: inherit; font-size: 13px;">add_layer </SPAN><SPAN class="" style="color: #303336; border: 0px; font-weight: inherit; font-size: 13px;">()</SPAN>

I added property on Web Map

and saved my changes.

But I didn't have Extent (Zoom to layer) in my filtered Layers

I would like to get the extent of the filtered layer to pass the extent in the webmap, does anyone know any way?

Library - https://esri.github.io/arcgis-python-api/apidoc/html/index.html

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Accepted answers

DerrickWong

Hi Vitor Ribeiro‌,

If you know the extent, you can call

.update(item_properties={'extent': extent})

https://esri.github.io/arcgis-python-api/apidoc/html/arcgis.gis.toc.html#item

All comments

Carlode_Stefano

@DerrickWong i'm calling the extent of the feature im interested, but when i publish the webmap the zoom is still at global level. How could i fix it?

DerrickWong

Hi Vitor Ribeiro‌,

If you know the extent, you can call

.update(item_properties={'extent': extent})

https://esri.github.io/arcgis-python-api/apidoc/html/arcgis.gis.toc.html#item

VitorRibeiro

This form works, but returns something empty.

These steps I followed to child Web Map with my desired information. The biggest problem is zooming to the extent of Filtered Layers.

- I created WebMap ()

- Add 2 layers to wb

- I gave a definitionExpression on my layers (as shown in print)

- Set up webmap_item_properties with title

- snippet and tags

- I finally saved the Web Map

Unfortunately the extent of the Map is too far away, showing the entire globe of the basemap. I would like to know if it is possible to zoom the moment you filter in definitionExpression?

Here's a screenshot of my Jupyter Notebook

In the empty line was my sql, but I had personal information and could not publish, but it was working

DerrickWong

Hi Vitor Ribeiro‌,

You should be able to grab the extent from the layer object that is returned from a search:

Here's a sample code:

from arcgis.gis import GIS
gis = GIS("https://ABC.maps.arcgis.com", "USERNAME", "PASSWORD")
search_result = gis.content.search('title:LayerOfInterest', item_type = 'Feature Service')

if len(search_result) > 0:
layer = search_result[0] #assuming we want the first layer.
print(layer.extent)

Attached is a screenshot of the code running on my AGOL with the results displayed in the output.

Hope that helps.

tested notebook code for extent.png

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