Celestia Forums

Hi, does anybody know how to generate vector map projections? In Mathematica there is this "World Plotting Package" but it delivers vector plots with very poor detail. And in its tutorial Mathematica says that "You can specify your own database of geographic coordinates by setting the...

Hi, I've got still some "little" problems. The first thing is that plotting the borders or coastlines with Mathematica's "ListLinePlot" command gives me a somehow unsatisfying result: http://www.szatanik.eu/img/earth/_1.jpg I could not find out if or how it is possible to avoid j...

No problem anymore with this issue guys. Sorry, I wasn't clear enough with the 'edit' of my last post at the end where I tried to communicate the specific problem has been solved.

Cheers, tiburcio

Hi, I've started to plot the coordinates in Mathematica now. There it goes e.g. like this: ListLinePlot[{ {x1,y1},{x2,y2}... },PlotRange-> {{-180, 180}, {-90, 90}}] What bothers me though is that I have to modify the coordinates from the txt files manually and it's so many coordinates. In the text f...

Hi Take any decent plot program of your choice (Mathematica, Maple,...) and make a plot with abszissa ranging: -180...180 and ordinate: -90..90 (simple cylindrical setting). Then plot Grant's points and connect them with lines (every plot program can do this). That's the step I was missing. I though...

Hi Selden, I am not sure if I understand your example correctly. As an exercise I've created a VT successfully following the "Virtual Texture for Dummies" tutorial where I have to handle texture files like JPGs. But now I have to deal with those text files which carry the coordinates of th...

Hi,

how do you convert the text files from Grant Hutchinson or those found here in order to plot them on the "Blue Marble projection" (cylindrical (latitude/longitude) projection)?

Cheers, tiburcio

Thanks!

I contacted Cham now but I should take a closer look on Grant's site and maybe contact him too. Thank you for the link Selden.

Cheers, tiburcio

Edit: @Selden: Is it the same file in your link as the one you can download on www.celestiamotherlode.net? ...I am looking for a 2D file though.

Hi,

I suppose there isn't any "political borders" file that would match NASA's blue marble images, at least I haven't found any. Would it be possible to apply Cham's political borders to a blue marble image?

Cheers, tiburcio

Thank you guys! I am on the way to learn ISIS now. Though I still don't understand what Setting Up The Environment Variable in UNIX means after following the 'Installing Isis' steps I am able to run qview and take a look on the first examples now, so I think the installation might have been successf...

Hi, I started to install ISIS 3 with this command: [rsync -azv --delete isisdist.wr.usgs.gov::isis3_intel_darwin/isis .] The next step will be to install the necessary ISIS 3 data files. In order to install the F-Fex Tools for my purposes, do I have to follow the Texture Workshop on CelestialMatters...

Ok Fridger I'll take a look on the F-Fex Tools though I don't have any problems with higher resolution (e.g. 21600x10800 NASA Blue Marble) here on ImageMagick...

Cheers, tiburcio

Hi, finally I was able to install ImageMagick with MacPorts successfully. I took some lessons in ImageMagick's "The Anatomy of the Command Line" but of course my skills are far away from what I can do pointing with a mouse e.g. in Photoshop :D ... I have a question about the Output image s...

Hey ElChristou, Thanks! I didn't know. It's just curious for me that although I have a new Leopard Installation here, the installed XCode Tools won't update automatically... Maybe you can tell me something about this installation step: "Set the MAGICK_HOME environment variable to the path where...

Ok, I followed the steps on ImageMagicks site but the first big problem was that I need at least XCode Tools version 3.1 and version 3.0 will not update automatically. When trying to get the 3.1.2 update with versiontracker I need an ADC Membership (which is charged with a fee I suppose)... This hap...

Thank you cartrite!
I think I already met USGS when I was downloading Snyder's "Map Projections - A Working Manual" ?
I'll take a look on this even if Winkel-Tripel is not covered there.
I wonder how the guy from wikipedia managed to create those impressive projections?

Cheers, tibo

Thanks Fridger!
I think I should try it.

Cheers, tiburcio

Thank you Fridger! Ok, I must add that I am working on a mac and though I had some contact with the command line in osx terminal I rather prefer to use apps with a GUI. :D What I am trying to get is not a vector file but a pixel template of sufficient resolution to import it into Illustrator and the...

Hi, I am happy to be here. I downloaded this app after researching about the different map projections. I don't know how far I can use Celestia in order to make some advancements in my project but my first impression of the application is very positive due to its sophisticated visuality. I believe f...