Some thoughts on the final project
All in all, I was very pleased with my final project. I overcame some pretty high hurtles, mainly that we thought it impossible to find a DEM of Europe, let alone a former Soviet Bloc country. When we were looking for paper topographic maps of the Czech Republic in 1998, the store owner would not sell them to us--we had to send our translator to buy them. Felt a little like a 19 year old outside a liquor store hoping to find a sympathetic adult. But three days of diligent study turned up a company that sold DEMs by the square kilometer. Pricey, but worth it. Leave a message if you want their address. I had found a map of the Prague region printed in 1965--close enough to my project. But it was an old paper map, and I had to scan it in two different sections. I was really certain I could not make it fit--after all, our rubbersheeting exercises had mainly been digital on digital, not paper on digital. But I got the darn things to line up, so I was able to find a covert television station from the street map, then use the geography to find the line-of-sight target of the signal. Although I did not put it on the final project, I used NSD, placed the camera almost exactly where the microwave transmitter was--on a hill plus on the twelfth floor--then looked for a hill . Sure enough, I found a slight dip in the range of hills closest to my camera, then a single hill just beyond it. That was the target, perfectly hidden from any view save that single angle. Sadly, it did not read well, so I did not include it. But it was so cool to find an answer just pop out of thin air, so to speak.
I had some problems with the printing process--I got it done, but am not happy with the results. I did not break it into two sheets, but had Kinkos print it as one 20"x13" sheet. (The counter jockey did not want to be bothered to help me turn it into two pages--he was not happy I wanted one day service. Customers just ruin his day, you know.) Consequently, no margins. So it won't display nicely. Also, it cost me $20 for matte finish. Glossy would have been twice that. I will try to divide it in two and get it printed somewhere else.
I will be going to Prague in January, so I will do some more investigation on my project. I also have another problem to figure out that our new techniques may answer. In the Old Town square stood two statues: a Marian column and a statue of Jan Hus. The Hus statue was erected in 1915, while the Marian column was destroyed in 1918. Mary faced west, and Hus, depending on who you believe, either faced her or looked past her. We know how tall the Marian Column was and exactly where it stood. So my problem is to get the measurements from the Hus statue, create mock-ups in Sketch-up, then figure out where Hus was looking. I need to get his height, and I won't be able to climb up to measure. This is why I am asking Santa for an Abney level for Christmas. This little device is used mainly by foresters to determine tree height. (You thought they climbed up those trees with a tape measure? These are the guys who wanted to mark trees from their pickups, so they invented the paintball gun.) The function of the Abney level is very simple--you measure the distance between yourself and the object, then you sight the top of the object and find the angle. Here is a nice do-it-yourself guide to building and using one. But of course, I want a more exact one with lots of knobs and fiddldy bits. It might just come in handy for digital cartographers who want to know the heights of buildings, but can't get on the roof with a tape measure. Anyway, they are cheaper than laser range finders, and they look a bit like sextants, which I think are the gadget equivalent of Antonio Banderas. You know, weapons grade sexy.
Just wanted to point out I had a terrific time in this class, and I hope to see you all around campus. Let us know if you are doing anything mapish in the near future.







