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My Past GIS Experience

Posted 02-15-2008 at 05:06 PM by lfdmike

I have been working on other projects for the last few years, and have not done too much programmaticaly since the early days of the Iraq war- and most of that was Eric's doing, I just came up with the simple algorithms.

Prior to that I had done quite a bit using the MapPoint Control embedded into an Access db. This was actually started from another Eric prject, which tracked Chinese resteraunts. I work with emergency services so I put together an application that was based on all...

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Hello, Virtual Earth

Posted 02-15-2008 at 05:20 PM by lfdmike

I really never even looked at this new product until I saw a posting about it in the Microsoft Newsgroup for MapPoint.
I had to go try it.... I'm hooked now.

First thing I had to do was play with the excellent SDK over at MSDN, just so I could get out of the box and get a feel for the power. Being web based, I saw new oppurtunities with being able to be scripted.

After the initial play with stuff, I went out to see if my old friend the Aloha DLL would be nice....

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Drawing Eggs

Posted 02-27-2008 at 11:40 AM by lfdmike

As I stated last week, ALOHA is out and I am hand coding the algorithms for isolation zones.
The information will be coming from the Emergency Response Guide which provides an initial radius for isolation and an extended distance downwind.
I have succeeded in creating the 2D plot mathematically. The developement page was written in Classic ASP, and the coding changed the CSS for plotting 36 images (1 dot for every 10*) in a semi-circle upwind from the (fixed) source, and an ellipse...

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A quick day or so later

Posted 02-27-2008 at 02:16 PM by lfdmike

Not too much to change to transpose the 'Eggs' to VE. I rewrote the loop which created the coordinate pairs to write the javascript coding and then I needed to re-origin the map- in HTML, the origin point is the upper left corner of the screen.

So now I have a map which is hard coded on the release location. A simple point-click should be able to take care of that portion. Then the next part will be a db lookup to get the isolation distances. When we are done it should be a 3 part...

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Simple thoughts, hard processes

Posted 03-18-2008 at 05:04 PM by lfdmike

I've been doing some tweaking of my mapplication.
The ancient Aloha NOAA dll would render an threat zone and a confidence zone. The difference between the 2 is that the confidence zone swept out a wider arc- compensating for variations in wind direction and other inaccuracies. Never can be too safe with the hazardous materials
I created a new algorithm for my mapplication, to add in that confidence area besides the original threat zone. I based mine off of the Emergency Response...

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MapForums

Best Entries

My Past GIS Experience

Hello, Virtual Earth

Drawing Eggs

A quick day or so later

Simple thoughts, hard processes