The American Standard Code for Information Interchange (ASCII) is a character encoding scheme for text representation in computers. For questions about .asc files, use the [esri-ascii-raster] tag instead.

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5
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1answer
1k views

arcpy - ascii encoding error when updating field content in SQL Server table

I know there are plenty of posts and blog explanations about unicode errors, but I still can't figure out to handle it in my particular case. So here is my problem: I am writing a Python script to ...
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1answer
411 views

How to read .adf (TIN) map files?

I have a set of maps in few formats : TIN ├── [4.0K] info │   └── [2.6K] arc.dir ├── [ 708] log ├── [374K] M-33-45-D-d-4.asc └── [4.0K] m-33-45-d-d-4tin ├── [ 96] tdenv.adf ├── [1....
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0answers
92 views

Bi-Weekly NDVI data into monthly Datasets

I have NDVI data in both Ascii Grid format (0.250 degrees resolution) and raster format twice a month like: ndvi1981_07a ndvi1981_07b I would like to combine these bi-weekly values (average) into ...
0
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0answers
279 views

How to create .dem file in QGIS?

I have an elevation data in .asc file, but need to convert it to .dem file to later use in COMSOL. However, in Raster--> Analyzes-->DEM I got just error message: ERROR 1: DEM Default Setup: Importing ...
6
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3answers
812 views

How to convert a National Bridge Inventory(NBI) ASCII file to a shapefile [duplicate]

I have a problem. I have downloaded the NBI ascii file data from http://www.fhwa.dot.gov/bridge/nbi/ascii.cfm. Now I am not able to convert it into a shapefile. The ASCII file has a latitude longitude ...
1
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0answers
941 views

How to use paths with non ASCII characters for subprocess calls with ArcGIS

I know that it is possible to create calls using unicode character encoding like \xf8 for non ASCII characters but how do I do it writing a path in a script just like: 'e:\gis\python_ø\notepad.exe' ...
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0answers
110 views

How to export raster into ascii without losing the statistics?

I had a problem in Mike Urban with a difference between a DEM (Digital Elevation Model) and a 2D overflood model and the support group requested me to remove the difference because the problems were ...
1
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4answers
2k views

Import ASCII (X, Y, Value) to Feature Attribute in ArcGIS

The output from my landscaping modeling program is simply way too big to be rendered by Paraview. So I am wondering is there anyway that I can import it into ArcMap. The data is divided into several ...
2
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1answer
961 views

Arc ASCII Grid output problem in QGIS 2.0

I used to convert tif files to ascii in Qgis 1.8 using gdal translate without having any problems with the output i.e. I have the normal heading and values. When I upgraded to 2.0 I started to get the ...
1
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1answer
2k views

How to export polygon coordinates?

How can I export each polygon-vertice's coordinate (every point coordinate of every polygon) of a polygon Geodatabase-feature class to an ascii text file (csv or txt)? I don't want to convert it to a ...
1
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1answer
259 views

How to add LiDAR Intensity attribute to a point feature class?

I need to convert LASD (ESRI LAS Dataset) to ASCII text file. I've export the data to point feature class (LAS to Multipoint), converted multipart to single part and calculate X Y and Z.My first ...
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0answers
292 views

Maxent out of bound error?

I selected my climate data from wordclim ( tile 29 ) and then used QGis to convert the data to .asc format . My occurrence data is in degree decimal.But when I run Maxent on any layer it says that the ...
1
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1answer
829 views

Input data to Maxent niche modelling tool?

I have following question regarding the input format of files to Maxent. From here I downloaded the environmental layers but they are in tiff format and I guess the tool needs in asc format where ...
1
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1answer
801 views

raster to ascii in QGIS

I have a raster file (DEM or .tif), but I need to transform it into a .txt file (ascii). How can I do this in QGis (Quantum Gis)? Thank you so much!
1
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1answer
455 views

Problem in saving a file in a specific output folder

I have a very simple script that I'm testing. It has always been working so far, but now I'm running in an unexpected error. When I try to save my files in a folder different than the environment one, ...
1
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1answer
87 views

Which kind of grid format is this?

in a project I got some raster files with the following content (header and data are in one txt file): HOUR 17 MINUTES 30 YEAR 2012 MONTH 5 DAY 4 CITY Emilia;Bologna NROWS 99 NCOLS 156 ULXMAP 11....
15
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2answers
18k views

Understanding the .asc file

Reading the ESRI help, Supported raster dataset file formats, I read that ASCII Grid file types are addressed with the singular file extension .asc for both 16 bit signed-integer (for discrete data) ...
2
votes
1answer
630 views

How do i convert STDS file to ASCII DEM?

I've downloaded several 7.5 minute DEM files from USGS and they have file names like: 1661629.DEM.SDTS.TAR On MAC these decompress into a folder with serval files having the extension '.DDF'. Is ...
2
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2answers
346 views

Convert ASCII Grid Colorized to Raster

I have an ASCII Grid file + .prj file and can visualize this in qGIS. I can colorize it by going to properties and using a Pseudocolor Ramp. However, I want to export this now as a TIFF / Raster. ...
1
vote
4answers
9k views

Get pixel value from a raster in a xy table

I'm trying to find a way to convert a raster (in my case it's a Landsat satellite image) into a table with 3 columns which would represent: 1) x coordinates (the so called "xllcorners" in ASCII terms);...
1
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1answer
2k views

How can I avoid UnicodeEncodeError when using geoprocessing tools in QGIS?

I have a shapefile, that I want to split with the "Split Layers by Field"-tool. Due to some umlauts (ä,ü,ö) there will be a python error as soon, as the tool reaches a feature with an umlaut. The ...
1
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1answer
342 views

Input data format and read multiple files into Grass 6.4.1

I am trying to read in multiple (hundreds, thousand) LiDAR ascii files into Grass. They contain elevation data. I think I have managed one, and I can make a map of elevations, using File, Import ...
2
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0answers
391 views

Best method to convert CSV file of lat/lon and depth data to bathymetry polygon?

I'm trying to create bathymetry polygons based on lat/long and depth data. I have tried several methods and the resulting polygons are clunky. Make XY Event Layer-->Copy Features--> Project--> ...
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1answer
1k views

How to draw grid cells in QGIS?

I have one ASCII text file with eight columns. The first four provide the x-coordinates (e.g. longitude) of the four corners of a grid cell, while the last four provide the y-coordinates (e.g. ...
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1answer
694 views

Batch Export feature attribute to ASCII in ArcGIS for Desktop?

I have around 160 feature classes that I need to convert into ascii files. Spatial statistics tool ---> Utilities ---> Export feature attribute to ascii only allows converting one file at a time. Is ...
11
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2answers
618 views

Converting ascii windspeed files to rasters

I have been trying to convert windspeed files to rasters without success. It was discussed in an Arcgis forum which I followed. This involved replacing semi-colons with spaces and adding a header. I ...
3
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0answers
634 views

Batch Converting ASCII into Feature Classes using shapefile lists [closed]

Problem. I have 413 ASCII files totalling 4 billion points, and my system cannot handle converting them to MULTIPOINT so that I can generate Terrains. Therefore I would like to create 12+ subsets of ...
2
votes
2answers
1k views

Converting polygon layer to *.txt files using ArcGIS Desktop?

Is there any way to convert polygons that do not have coordinates in the attribute table to a txt file with coordinates. I will be using the txt file in a different software (not ArcGIS), so I need ...
1
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1answer
369 views

Error 000204 using “Export Feature Attribute to ASCII” Tool on ArcGIS Server 10

I´m trying to export feature attributes to a CSV-File (on ArcGIS Server) to use them in other applications (using the "Export Feature Attribute to ASCII" Tool). While the tool is working ok in a ...
1
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2answers
531 views

What I'm doing wrong with the command r.out.ascii in GRASS GIS?

I have raster in .bil format which I want to save in GRASS GIS with r.out.ascii. I get this result in .txt file: north: 1N south: 0 east: 1E west: 0 rows: 1 cols: 1 55537 I suppose it is something ...
17
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3answers
4k views

Exporting table to XYZ ASCII file via ArcPy?

I'm looking for a way to export an ArcGIS table (created with the Sample tool) to a text file via ArcPy. I can do this in ArcGIS via the context menu by right-clicking the table, but have not found ...
7
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2answers
13k views

Manipulate .asc files in qgis

I have an .asc file and I want to import in QGIS. The standard way to open it is from "add Raster layer" ("import Raster Layer"), there is another way? I know is strange that ask but I need it. And I ...
4
votes
2answers
223 views

Lightweight python modules to convert LAS data formats to text formats?

I searched on the net and found pyLAS, but it seems to require quite a few other modules and I couldn't get the install right. Any pointers will be much appreciated.