Zip Code Distance Calculation

I've developed a Formula language and LotusScript version of the formula to
calulate the distance between two zip codes in the US. The Formula language
version is included below.

There are several subscription zip code services available that will make
available a list of all valid zip codes in the country. You can arrange to
have the location of the zip code included in the file. The zip code itself is
great for validating data entry, but there are other ways to use the
information once it is 'in house'. To use this example:

1. Add the code below to a view action button in a database of zip codes.
2. Select one zip code in a view.
3. Click on the button and select a second zip code from the list.
4. See the distance between zip codes.

The script version has been great for calculating the closest vendor for a
company to work with and many similar applications.

Note: I have a small freely distributable DB of zip codes that I could include
with this example code to make it work out of the box.

Take a look and let me know what you think.
Andy
ziplist := @DbColumn("";"":"";"ZipCode";1);
zipToUse := @Prompt([OKCANCELLIST]; "Select a Zip Code"; "Select a zip code to
calculate distance from the selected zip."; "";ziplist);
zipRLat := @DbLookup("":"Cache" ; ""; "ZipCode"; zipToUse; "RadLatitude");
zipRLong := @DbLookup("":"Cache" ; ""; "ZipCode"; zipToUse; "RadLongitude");
zipCity := @DbLookup("":"Cache" ; ""; "ZipCode"; zipToUse; "City");
zipState := @DbLookup("":"Cache" ; ""; "ZipCode"; zipToUse; "State");
RadLat2 := zipRLat;
RadLong2 := zipRLong;

CalcX :=
(@Sin(RadLatitude) * @Sin(RadLat2) + @Cos(RadLatitude) *
@Cos(RadLat2) * @Cos(@Abs(RadLong2 - RadLongitude)));

RadDist := @ATan(-CalcX / @Sqrt(-CalcX * CalcX + 1)) + 2 * @ATan(1);
DistMI := RadDist * 3958.754;
RndDistMI := @If(DistMi = 0;0;@Integer(DistMI * 10)/10);
@Prompt([OK];"Miles"; "Distance: " + @Text( RndDistMI) + " miles. From " +
City + ", " + State + " to " + zipCity + ", " + zipState + ".")
This was first published in November 2000

Dig deeper on Domino Resources - Part 4

0 comments

Oldest 

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to:

-ADS BY GOOGLE

SearchWindowsServer

Search400

  • iSeries tutorials

    Search400.com's tutorials provide in-depth information on the iSeries. Our iSeries tutorials address areas you need to know about...

  • V6R1 upgrade planning checklist

    When upgrading to V6R1, make sure your software will be supported, your programs will function and the correct PTFs have been ...

  • Connecting multiple iSeries systems through DDM

    Working with databases over multiple iSeries systems can be simple when remotely connecting logical partitions with distributed ...

SearchEnterpriseLinux

SearchDataCenter

SearchExchange

SearchContentManagement

Close