In eSpatial, you can create radius maps using the Within Distance tool – free to use for 7 days, when you sign up for an account.
You need at least two sets of data to build a Within Distance report. Items from the first dataset represent the center point of each radius circle (or “buffer area”). Items from the second dataset may or may not appear within this circle, depending on whether they are within a radius distance set by you.
Let’s take an example
For instance, imagine you run a laundry business and you want to find out how many hotels (they might need your services!) fall within a 3-mile radius of each branch of your business.
In this case the first dataset would be the branches of your laundry (the center point) and the second dataset would be the hotels that appear within a 3-mile radius.
As in the above map, Within Distance would plot the two datasets, where represents a branch of your laundry and represents a hotel.
Assuming you have set up an account and uploaded two sets of data, login to eSpatial and click the Create Report button, which is located on the top bar of the eSpatial window.
On the next page, select
Next, you will need to Select the Report Dataset.
The Report Dataset you choose is the data that you want plotted around a center point. In this case, I will choose “Our Customers”.
Once you make your selection, you will automatically be taken to the Within Distance Dataset page. This dataset’s points will form the center for the radius map to be generated. In this case I will choose “Sales agents”:
So, I am going to plot “Our Customers” around the central point that is “Sales agents”.
Once you’ve made your selection you will be asked to Set Distance. This can be in Miles, Kilometers or Feet (click on the drop-down menu to choose which one)
The number you input will create a circle that represents that radius distance from your center point – in my case, 10 miles.
At the bottom of this page you will notice that there are 3 buttons.
“Previous”, as you would expect, brings you to the preceding page, where you can change your dataset selections.
If you just want to generate a radius map quickly and are happy with the default options, then just choose “Complete Now”. The disadvantage of this is that you won’t be able to control the fields that appear in your data list and information box, nor will you be able to filter data or customize charts before the map is created. For these reasons, I suggest you click Next.
This will bring you to the page to select the fields that you wish to include in your final report.
There are two field selections on the above page.
The selection on the upper part of the page(Select Fields for Report Results) represents all the fields in your two individual datasets. Click on the tabs indicated by arrow 1 to switch between the datasets. Use the horizontal scroll bar to navigate through to all fields in a dataset.
The second field selection (Preview – Fields selected for Report results) represents those fields that will be included in your final report – appearing in the data listing or in in a map point when clicked. To add a field from Select Fields, simply click in the grey bar area of the upper field selection (as indicated by arrow 2)You will now see this in the Preview selection. (If the field is shaded green above, that means it is already included in the Preview fields).
To remove a field from Preview, move your cursor over the grey bar and an “X” will appear (as in arrow 4). Click this and the field will disappear.
The only item that cannot be removed from the Preview field, by default, is the distance field (arrow 3). Without this included, Within Distance reporting seems rather pointless!
When you are happy with the selection of fields to be included in your report, click Next.
This brings you to the filtering page.
Now there are innumerable ways to filter data in eSpatial before creating a report. I am just going to provide you with an example where I have applied two filters.
Let’s say I just want to create a Within Distance report that filters out everything except customers who had Total Sales 2011 were greater than 100,000 in the Northeast region.
First, I will click the Our Customers tab, then I will click on the title bar of the Total Sales 2011 field, as highlighted in the image above.
In the operators and values field that now appear, the filter title is added and I will select “greater than” from the “select operator” drop-down menu.
Next, I will select the “enter value” and select the filtering value applicable in this case = 100000 (NB: since this is a numerical field, there should be no comma separators – so 100000 not 100,000).
That’s my first filter created! Now I’m going to add another filter, which will be text-based.
If you recall, I set out to filter everything out except customers who had total sales greater than100,000 in the Northeast region – effectively, they’re the only records I wish to see plotted on a map.
So next, I will see click on the Region title bar (found by using the horizontal scroll) and, as before, I will be asked to generate the criteria for the second filter:
Because I only want data related to the Northeast Region, I will choose “equals” under “select operator”. and then I will enter the exact word in the “enter value” box:
So, now I have my filters in place:
If you hover over one of these filters, it will be highlighted in yellow and an “X” will appear, as indicated above. Clicking this “X” will remove the filter completely.
If you’re happy with the filters you have in place, it’s time to click Next and move onto the next page. Here, you can customize graphs that can be part of your report:
There are a variety of charts that you can utilize in your report, as indicated by the graph icons in “Define your chart” above. We’ll cover just one example here: a bar chart that is going to set Total Sales against First Name of the sales agent.
To create this chart, I simply click anywhere on the relevant field columns. If the field is shaded orange, it indicates the X value on the chart, if it is shaded blue it indicates the Y value on the chart – a thumbnail preview is conveniently created at the top of this page.
You can use the switching box beside the X value field (indicated by the larger of the two red arrows)to reverse the positions – so the value in X becomes Y, and vice versa.
Remember: You have to include at least one numeric value to create a chart – if you have fields that only have text data, then they cannot be converted into a chart.
It’s worth experimenting to find which chart best expresses your data. Alternatively, you can completely avoid creating a chart, by just clicking the “X ” in the top right-hand corner of the thumbnail chart box (the Chart 1 box in our sample above).
When you’re happy with your chart selections, click Next. Now all you have to do is name your Within Distance report and then – for your own convenience – add a description.
Now it’s just a case of clicking “Finish” to generate an interactive Within Distance map that contains the datasets, fields, filtering and charts that you wanted:
Find out more about how to create a Within Distance map in our help pages.