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Post by tenochtitlanuk on May 28, 2021 16:29:32 GMT -5
Many years ago, when I had access only to 40x25 characters on a Commodore PET and the web didn't exist, I had fun writing code to use pseudo-double-precision graphics at 80x50. Wanting to map the world, I needed latitude /longitude data for all the continents. The best way ( then) to achieve this was to find a ( paper) atlas, and copy the data by hand from the gazeteer at the back of the atlas. Very long and slow to do, and easy to make mistakes. About this time BYTE magazine published a great edition on map projections which we tried out. We also learned to create printouts on dot matrix printers at very high resolution by sending pin-control codes to the Epson parallel port. Recently I decided to repeat the exercise. It took about an hour to track down on the internet a table of lat/long/height data, and code a simple LB GUI to examine the data on a 1620x1040 graphic window. Excellent fun!
See global map demo on one of my pages. Image below needs viewing at full size...
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Post by Carl Gundel on May 28, 2021 17:31:57 GMT -5
Many years ago, when I had access only to 40x25 characters on a Commodore PET and the web didn't exist, I had fun writing code to use pseudo-double-precision graphics at 80x50. Wanting to map the world, I needed latitude /longitude data for all the continents. The best way ( then) to achieve this was to find a ( paper) atlas, and copy the data by hand from the gazeteer at the back of the atlas. Very long and slow to do, and easy to make mistakes. About this time BYTE magazine published a great edition on map projections which we tried out. We also learned to create printouts on dot matrix printers at very high resolution by sending pin-control codes to the Epson parallel port. Recently I decided to repeat the exercise. It took about an hour to track down on the internet a table of lat/long/height data, and code a simple LB GUI to examine the data on a 1620x1040 graphic window. Excellent fun!
See global map demo on one of my pages. Image below needs viewing at full size... Dang, I can only claim 43 years programming. God willing I'll get to 50 years. Once upon a time programming a printer was simple enough to be fun. In fact back in the day many printers came with programming instructions.
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