Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 589
  • Last Modified:

Need Unix Shell Script to calculate the distance between two zip codes

There will (4) four input paramters to the script, the longitude and latitude from two different zip codes.

The formula is:
sqrt( (34.1693-34.1448)^2 + ((117.9595-117.7375)*cos((34.1693+34.1448)/2))^2 )  * ( 2 * PI * 3959/360)

The output would be the distance between the two zip codes (miles).


Let me know if you need anymore info.

Thanks!
0
rlburris
Asked:
rlburris
1 Solution
 
chris_calabreseCommented:
Look at the man page for the 'bc' command.
0
 
rlburrisAuthor Commented:
Chris

Thanks... Looks like what is needed, can you provide the script logic?
0
 
Alf666Commented:
VAL1=34.1693
VAL2=34.1448
VAL3=117.9595
VAL4=117.7375
PRECISION=2


echo "scale=${PRECISION};sqrt( (${VAL1}-${VAL2})^2 + ((${VAL3}-${VAL4})*c((${VAL1}+${VAL2})/2))^2 )  * ( 2 * 4*a(1) * 3959/360)" | bc -l

You have to have a "recent" enough bc (like the linux one) which accepts the "-l" switch to load the math library.
0
 
ozoCommented:
#!/bin/sh
lon1=117.9595
lat1=34.1693
lon2=117.7375
lat2=34.1448
perl -e "print sqrt(($lat1-$lat2)**2+($lon1-$lon2)**2*cos(($lat1+$lat2)*atan2(1,1)/90))*69"
0

Featured Post

[Webinar] Database Backup and Recovery

Does your company store data on premises, off site, in the cloud, or a combination of these? If you answered “yes”, you need a data backup recovery plan that fits each and every platform. Watch now as as Percona teaches us how to build agile data backup recovery plan.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now