Tweet about this on TwitterShare on FacebookShare on Google+Share on LinkedIn

How to create radius maps

Radius maps are great for proximity analysis – how far is the nearest hotel to an airport, how many customers are within 10 miles of your local offices, etc. With eSpatial, you can create eye-catching radius maps in minutes.

(Post updated January 2015)

radius maps

What you need to create a radius map

A minimum of two sets of data – one dataset will provide the center point (eg., Your coffee shops), the other dataset will contain the data to be placed within the circle surrounding the center-point (e.g., Competitor coffee shops).

Step 1

Create a free (or log into an existing) eSpatial account and upload your data. I’ve uploaded two datasets – Distribution Centers and Customers.

By default, a pin map is created from the existing datasets. Once I have switched off Color By Value (the paint-bucket icon in the Legend menu), my map looks like this:

 Create a radius map

Step 2

Click Analyze data

Create a radius map 2

 

and then select Radius Map

 

Create a radius map

Step 3

Now input the radius distance you want to cover in your radius map. I’ve chose a 5 mile distance here.

 

Create_a_radius_map_3a_fina

Step 4

Finish by clicking Complete and your radius map is generated:

Create_a_radius_map_4

The circles are colored, by default, to represent levels of data – in the above case, by Sales (other options are available by clicking the dropdown). However, you can switch off this coloring anytime, by clicking the paint-bucket icon in the Legend menu, as indicated by the arrow:

 Create_a_radius_map_5

Using radius maps for analysis

On looking at the the above map, I think I should expand my radius range. To to this, I click Clear Analysis in the control panel. This takes me back to my original pin map. I will now create a new radius map to 25 miles:

Create_a_radius_map_6The above map is far more interesting – including much more data and also giving me a new insight: I may not need 3 distribution centers in this part of the country. I’m seeing this because the data in the two red circles shows an overlap of customers. This isn’t very efficient. After clearing the radius analysis a few times and trying different distances, I’ve created this 50-mile radius map.

Create_a_radius_map_7

The above map tells me something that could save my business a lot of money: I may not need 3 distribution centers. If organized correctly, two distribution centers could potentially cover what is now being covered by 3!

Saving radius maps

If I wanted, I could have saved all the radius maps I’ve explored above as bookmarked URLs. Or I could have saved just the final 50-mile map. What’s most important to realize is that every time I make a change to my original pin map – and I want to keep the changes, I need to use the Save As command:

 Create_a_radius_map_8

Otherwise the original map will be overwritten. You can find out more about saving multiple map views here.

More benefits of eSpatial radius maps

Leave a Reply

First time commentators will have their comments approved before they are displayed on our website


5 × five =