Questions tagged [mars]

Use this tag for questions which are specific to the planet Mars.

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2
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0answers
60 views

Understanding cosine-weighting?

I am studying a paper where they use a method to calculate the vertical distribution of water content (ice, water vapor, cloud water) from the amount of ice on the martian surface. In the paper they ...
0
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1answer
37 views

Switching Mars DEM elevation values from negative to positive?

I'm using a DEM of Mars I got from UA's HiRISE website, and I want to convert it into an STL for 3D printing using the DEMto3D plugin. However, the raster values are all negative, so I thought I ...
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0answers
151 views

Creating GeoTIFF from TIFF image?

I have a TIFF file that is 2880x1440 pixels. It is a global map in simple cylindrical projection (i.e., each pixel is a 1/8th degree square): If the uppermost leftmost pixel has coordinates x = 1, ...
2
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1answer
504 views

Get Mars DEM Data

I'm very very new to QGIS, I'm creating a small GIS project for the planet Mars. It's going along nicely so far, it's easy to find basemaps and the like from open data sources like PIGWAD and MOLA. ...
1
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0answers
51 views

Creating Viewsheds on Mars?

I am having a hard time creating viewsheds on Mars. Originally, I thought it was a coordinate system projection error, so I created a custom projected coordinate system for Mars, went to this site, ...
2
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0answers
78 views

Converting Mars Global DTM to Spherical Mesh

I am working on a video game that is attempting to provide a semi-realistic model of Mars. My starting point has been to find and use reliable geographic information to create the "model" of Mars. I ...
4
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1answer
855 views

Making base map from image with known corner coordinates?

I'm trying to make a map in Openlayers using an image of a crater from mars (specifically this image) so I can add markers/lines/etc on it. I know the min/max latitude/longitude for this image, so ...
2
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0answers
123 views

Losing resolution using gdalwarp to change projection?

I’m trying to project an image from Mars using gdalwarp, from eqc to polar stereo projection: gdalwarp -overwrite -s_srs "+proj=eqc +lat_ts=0 +lat_0=0 +lon_0=0 +x_0=0 +y_0=0 +a=3396190 +b=3376200 +...
2
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2answers
224 views

Mars DTM has all negative elevations in QGIS. Can't build STL file for 3D print

I downloaded Mars HiRise DTM .IMG files and they load fine and generate contours fine. When I try to create an STL using DEMto3D to print it on the 3D printer I can't export it because I cannot put ...
2
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0answers
255 views

Creating mercator projection for Mars planet in QGIS?

I would like to insert a new SRC in QGIS, like a Mercator projection for Mars. I selected personalised projection in "preference" icon. I clicked on add a new SRC: Name: MarsMercator parameters: +...
3
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2answers
142 views

ArcGIS Online - How to change underlying planet?

Background: I am a high school teacher with a brand-new ConnectED K-12 account from ESRI for ArcGIS Online and am trying to figure out the very basics to use this for planetary science. I have loaded ...
5
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1answer
3k views

Where to download Mars DEMs and landcover?

I'm looking on the websites of the Mars Global Surveyor and the NASA sites, but all of the data is in jpeg or img form. Does anyone know where to find useful raster data sets for elevation and land ...
0
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1answer
248 views

change projection in an ascii (x,y,z) file

I am having an ASCII file (lat,long,depth) in the Mars projection. I need this file to be converted into WGS-84 projection. How can I do the conversion for the ASCII files.
2
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2answers
2k views

How to clip all shapefiles, layers, etc associated with global map of Mars

I'm working on a project where I've found an open source NASA .mxd of shapefiles, layers, metadata, geology, a 30x30 graticule that splits the lat and long into 30 degree square polygons, etc. I only ...
18
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1answer
497 views

What GIS analysis techniques were used in determining Gale Crater as the landing site for the Curiosity Rover?

What specific GIS analysis was used in determining Gale Crater as the landing site for the Curiosity Rover? I'm assuming factors such as slope, elevation, ruggedness, etc were used as well as ...
8
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1answer
2k views

ISIS to GDAL to QGIS: Georeferencing Mars Images

I'm trying to use QGIS to view some images from the Mars Reconnaissance Orbiter Context Camera. I use ISIS3 to download the images and convert them to mapped .cub files, following the instructions ...