|Re: MICRO SD CARDS IN HP 50G??|
Message #8 Posted by Mike Reed on 26 Feb 2008, 1:42 p.m.,
in response to message #7 by Tim Wessman
Unlike many I can easily understand how you'd fill a 128mb. Not sure if you knew, but I am the head programmer and one of the founders of the DC50 company: (http://pssllc.com)
Hi Tim! No, I didn't know that, but I'm honored to make your acquaintance! Yes, 128mb fills up really fast, if you carry complete job files for each of about 20 to 25 different jobs!
I still have trouble seeing how you could fill a 2gb, unless by terrain you mean uncompressed TIFFs or something. Which software alignments are you using?
That's the whole idea of getting a 2gb card; it will hold all of everything in every job and still leave me room for new work. The alignments are relatively small, average on the order of 5 to 25kb depending on the job - includes mainline alignment, plus alignment files for each on/off ramp, structure (bridge) alignments, every crossing local road, sometimes frontage roads, etc. and sometimes, we set up each right-of-way as a set of alignment files, because you can stake it with zero offset, then. Our alignments are usually produced in the office on CaiCE software (we're supposed to change over to InRoads pretty soon though), but we can build them on-the-fly in the field too, with the Trimble TSCE w/ Trimble data collection software in it. They include horizontal layouts, profiles, and templates for each change in the cross section. The biggest files in the job are the "As-Staked" files - after each point is staked out, it is shot again and recorded. Rough grade, finish surface, every drainage structure, bridge, all the bench runs, etc. - everything is in there! Our DOT doesn't use TIFFs for storing existing surface; we have a strange kind of terrain file called TLI (Terrain Line Interpolation files) which can vary from 400 or 500 points to well over 15000. So, all design, plus as-staked files is a big package. I'll just guesstimate that each complete job file averages about 30kb, times around 20 average jobs is about 600mb. Doesn't fit a 128mb very well, but will be comfortably roomy on a 2gb chip.
I was looking at your DC50 software and was pretty impressed with it - would probably have gotten it and paid for it myself (ouch! on a State workers paycheck) but the state bought software for us from one of your competitors, (should I say it? D'Zign Transportation Pac) and we're using that instead. Most of the data collection is done with our two TSCE's but I do a LOT of field calc's and checking of design before the staking - catch a lot of design errors that way before they get built! That's why I carry, and use the heck out of my calculators. Check it twice, then stake it once!
How do I sign up to beta-test DC50? LOL