I'd never recommend any commercial software for something simple like that.

just try with 3 lines of R code:

#load the package

library(raster)

#read your file

r

You can try using R software (https://r-project.org), there package which allow you to read and write tif image (http://cran.r-project.org/web/packages/rtiff/rtiff.pdf), than you can save this image into different format lika ASCII, xlsx or CSV (http://www.statmethods.net/input/exportingdata.html)

Have you tried GRAPHPAD PRISM... I did use it but for some other .TIFF file conversion... Hope it'll be helpful for you as well...

Hi,

you can also use 3D Terrain Visualization and Flyby Animation. Its also a open source program. http://www.visualizationsoftware.com/3dem

I hope, it will work...

Thanks to all of you ! I gonna try right now following your advices.

GDAL provides a translation utility "gdal_translate"

http://www.gdal.org/gdal_translate.html

you may use it

1. as a command line utility; and you can write something like:

gdal_translate -of AAIGrid /yourGTIFFfile.tif /outputASCIIfile.asc

"-of" sets the output format; for more details on formats and their codes: http://www.gdal.org/formats_list.html

2. from another program like QGIS

load your raster file and then from the menu: Raster->Conversion->Translate

you will have to manually edit the command to change the format from GTiff to AAIGrid

I'd never recommend any commercial software for something simple like that.

just try with 3 lines of R code:

#load the package

library(raster)

#read your file

r

i agree with you Paulo..

Global mapper will do it more simply,, just add geotiff and export into AscII grid format.

Paulo, thanks for your help.

In your R code, your are talking about .grd files but I do want to convert .tif files. Secondly can you say to me what is the function system.file? Does it refer to the file path or is it for something else?

Maxime,

You should read raster help file

Try ?writeRaster

The best source of help on this is www.stackoverflow.com (http://stackoverflow.com/questions/tagged/r)

#load the package

library(raster)

#read your file

#Change C:/YOURFOLDER/ to your file path.

r

You can do it easily using QGIS.... (http://www.qgis.org/es/site/forusers/download.html)

http://gis.stackexchange.com/questions/77917/how-to-convert-a-gtiff-to-ascii-grid-using-qgis-gdal-translate

Paulo suggested the approach I would use. I would add that you might need to have the "rgdal" library as well as the "raster" library installed in your R system and you might stumble across a slightly different sequence of commands. GDAL reads and writes nearly everything, and having it at my fingertips in an R session (via rdgal) is wonderful. Also, I don't think you need to have the standalone version of GDAL on your machine to use rgdal, but I could be wrong about that.

Also, I didn't see anyone mention GRASS. That used to be (and may still be) a quite powerful GIS, including the capability to read and write many file formats (probably via GDAL).

Dear all,

I tried to convert worlclim future senarious files. But it is not work. I think the files have two band. How can i convert it? Thank you in advance

You should try to provide a minimal reproducible example of your data, or access to it, and the code or the procedure you're using and the error your are getting.

You can easily access Wordclim variables from R raster package. Try getData('worldclim', var='choosen_var', res=res, lon=lon, lat=lat). Replacing var, res, lat, lon.

Thank you

In ArcGIS > Arctoolbox > Conversion tools > Raster to asc.

In ArcGIS > Arctoolbox > Conversion tools > Raster to asc....Remember to modify the name of the file in the final menu from .txt to .asc

In ArcMap go to Arctoolbox > Conversion tools > Raster.  Input your raster file.  Then in the output file directory, make sure you put the extension .asc to your file name.  Instead of just putting for instance "outputfilename", put "outputfilename.asc".

You could try to use R-software (http://www.r-project.org/). Absolutely free and powerful software to work with raster image (read, manipulation, plot) using raster package (http://cran.r-project.org/web/packages/raster/index.html). 

In ArcMap go to Arctoolbox > Conversion tools > From Raster to ASCII. It is essential that in the output file directory you put the extension ".asc" in the name of your file. Example: "outputfile.asc".

@Marek Kowalewski can the gdal_translate be used with GeoTiff raster with multiple bands to an .ASC file. I am getting the Warning 6:XYZ driver only uses the first band of the dataset. Can you suggest a way to overcome this. Thanks