I have files, in Tiff format, downloaded from ASTER-GDEM.
Can I open this file with QGIS? If yes, how?
Best Answer
From your question, I'm assuming you are a new user of QGIS. Tiff files are a type of Raster, which are supported in QGIS. The fact that your Tiff is a DEM (Digital Elevation Model) just gives meaning to the values of the pixels in the Raster, but does not affect the file format.
That all being said. Here is how to add a Raster (Tiff, in your case) in 2 easy steps.
Click on Add Raster Layer
Select the .tiff file, and press Open
Here is the result:
Since your raster is a DEM, there are a couple additional steps necessary to make it display properly.
Right click on the image in the Table of Contents and SelectProperties
Select the Style Tab and under Contrast enhancement, Change the Current pulldown from DefaultNo Stretch, to Stretch to MinMax
Here is the end result with the DEM symbolized based on the raster values.
This process all being said and done, I would strongly recommend you to peruse the latest QGIS documentation: Version 1.8
As well, there is a wiki for QGIS that may be most helpful: How do I do that in QGIS?
It is likely that these two resources may lead you to an answer, as well as provide you with additional information.
Best Answer
From your question, I'm assuming you are a new user of QGIS.
Tiff
files are a type of Raster, which are supported in QGIS. The fact that your Tiff is a DEM (Digital Elevation Model) just gives meaning to the values of the pixels in the Raster, but does not affect the file format.That all being said. Here is how to add a Raster (Tiff, in your case) in 2 easy steps.
Add Raster Layer
.tiff
file, and pressOpen
Here is the result:
Since your raster is a DEM, there are a couple additional steps necessary to make it display properly.
Properties
Style Tab
and under Contrast enhancement, Change the Current pulldown from DefaultNo Stretch
, toStretch to MinMax
Here is the end result with the DEM symbolized based on the raster values.
This process all being said and done, I would strongly recommend you to peruse the latest QGIS documentation: Version 1.8
As well, there is a wiki for QGIS that may be most helpful: How do I do that in QGIS?
It is likely that these two resources may lead you to an answer, as well as provide you with additional information.
Good luck!