[gdal-dev] how to prepare set up file......

i have used the gdal libraries through fwtools in my .NET application, and now i am giong to prepare the setup of my applaction. But in the code i set the environmental variable from fwtools path. That means should i have to install fwtools in the client system, if so please tell me the way to pre

[gdal-dev] how to prepare set up file......

i have used the gdal libraries through fwtools in my .NET application, and now i am giong to prepare the setup of my applaction. But in the code i set the environmental variable from fwtools path. That means should i have to install fwtools in the client system, if so please tell me the way to pre

[gdal-dev] how to get the pixel value and its latlong value in projected image

I have a projected image and i want to read the pixel value along with its lat/long values for each pixel . I know how to read the pixel value and i dont know to read its lat/long value Thanks -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/how-to-get-th

[gdal-dev] how to clip the shape file

I want to access shape files using GDAL, and i have a shape file and raster image. then how to clip the shape file which covers that rasterhow to do this. Thank you -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/how-to-clip-the-shape-file-tp5451928p5451928.html

[gdal-dev] Re: how to (install) use gdal libraries in python

Thanks for ur help I followed the complete procedure,in the PDF provided by JAY.L but after installing all the appropriate bindings also i got an error..Here i attached screen shot of the error message Please give the suggestion to rectify this error... Thnaks. http://osgeo-org.18032

[gdal-dev] Re: how to (install) use gdal libraries in python

Thanks for your response. I installed python 2.7(installation procedure in first slide), and download gdal 32-1.6 files and extracted and placed in c drive(files in second slide), then i set the envoronment variables(slide 3).Then when i wrote simple one line code and run it. but i got the er

[gdal-dev] Re: how to (install) use gdal libraries in python

Thanks Mr.Chaitanya.. for ur reply... I followed the procedure what the link provided by you, but after when i used the simple code from osgeo import gdal in Python (ilde) when i run this code i got the following exception. "Traceback (most recent call last): File "C:/Python

[gdal-dev] Re: how to create a grid shape file with in the extent of the image

thanks for ur reply... But i am not familier with python programming. Can u help me please is there any possibility to calculate the zonal statistics using gdal in C#. Please help me thank you -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/how-to-creat

[gdal-dev] how to (install) use gdal libraries in python

I want to use gdal libraries in python. Till now i don't have the programming knowledge in python. But already i am working with gdal in visual studio with C#. I installed gdal libraries along with FWTools 2.4.7,and python 2.7. But i dont know how to integrate these gdal libraries in python. and

[gdal-dev] how to create a grid shape file with in the extent of the image

i have a land use land cover image, i need to create a 1000 * 1000 m grid(shape file format) over the image and i have to calculate the area of the each class in each grid how to do this..And i attach a file here visualization of my problem, Please help me how to do this. http://osgeo-org.

[gdal-dev] exception, while creating large image

in my application i need to create multiple images with large size using C#. while creating multiple files first three images created successfully after that i got the following exception. ContextSwitchDeadLock was detecteed The CLR has been unable to transition from COM context 0x204d28 to CO

[gdal-dev] Yll corner wrong when i am reading ASCII file using

Here i am using C# library for GDal, when i reading the YllCorner value using GeoTranform method i got that Yll corner value wrong. Eg: yllcorner 1648000 ..>original yllcorner 1747000 ...>Gdal Why, this much difference i got.. -- View this message in context: ht

[gdal-dev] is it possible to set particular colors to the pixels of an image

I have an image(LULC classified) which is composed of 1,2,3,4,5,6,7,8 pixel values. when i open the proper image in ArcMap or Mapwindow it displays the image in some colors(here in eight colors). Is it possible to set the colors manually for each pixel. Help me... I required it -- View this mes

[gdal-dev] how to read the color value of particular pixel

i want to know how to read the color value of particular pixel. and previously i used the following code to read the color table.but now it throws null reference exception.why?. My objective is to prepare the Rater legend control based on pixel values. Gdal.AllRegister(); Dataset d

[gdal-dev] Re: The type initializer for 'OSGeo.GDAL.GdalPINVOKE' threw an exception. when gdal.Allregister() calls

The type initializer for 'OSGeo.GDAL.GdalPINVOKE' threw an exception details: System.TypeInitializationException: The type initializer for 'SWIGExceptionHelper' threw an exception. ---> System.DllNotFoundException: Unable to load DLL 'gdal_wrap': The specified procedure could not be found.

[gdal-dev] The type initializer for 'OSGeo.GDAL.GdalPINVOKE' threw an exception. when gdal.Allregister() calls

i installed fwtols2.4.7 previously.That time i worked with gdal with out any problem but now when i work with gdal it throws the following exception.why. how to fix this. The type initializer for 'OSGeo.GDAL.GdalPINVOKE' threw an exception. This is the way i used. [DllImport("kernel32

[gdal-dev] how to get pixel vlaue of specific color

My image having pixel values between 0 to 8(classified image). The following code is used to read the colors of the image. Here i want know the pixel value of the specific color. Band band = ds.GetRasterBand(1); ColorTable ct = band.GetRasterColorTable(); for

[gdal-dev] how to new image file or how to send data into the dataset

i need to create a image file. Here i have brightness values of each pixel in a table. by using these values, how can i create an image file. -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/how-to-new-image-file-or-how-to-send-data-into-the-dataset-tp5120971p5120971.html

[gdal-dev] How to read first line pixel values of an image into buffer

I am using the following code to read pixel values. It read only one pixel value..how to read entire row.. generally this code is used to read 0th column 1st row and return pixel value into buffer. code: Band band = ds.GetRasterBand(1); double[] buffer = new double[ds.RasterXSize]; band

[gdal-dev] Re: how to get the each pixel value from the dataset

Thanks mr.Frank I am using .NET API.My query is When we assign a TIFF image to DATASET, then we get RASTERXSIZE and RASTERYSIZE. Here i am trying to GET each pixel value(brightness value) using two for loops.But i don't know which method is used to get this values. Thank you.. -- View

[gdal-dev] Re: conversion from one format to another is very slow

yeah, i did the same task with ARCGIS it took only 2 minutes only but the output of the two datasets(gdal,ARCGIS) are same. -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/conversion-from-one-format-to-another-is-very-slow-tp5073787p5074562.html Sent from the GDAL - De

[gdal-dev] Re: conversion from one format to another is very slow

I t will take nearly 25 minutes to convert 250 mb of tiff image to ASCII Thank u. -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/conversion-from-one-format-to-another-is-very-slow-tp5073787p5074491.html Sent from the GDAL - Dev mailing list archive at Nabble.com. __

[gdal-dev] how to get the each pixel value from the dataset

how to get the each pixel value from the dataset. And another requirement is how to get the values of ( ncols nrows cellsize xllcorner yllcorner nodata_value ) from the dataset.,,, Thank you... -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/how

[gdal-dev] conversion from one format to another is very slow

when i convert data from one format to another (ex: GEoTIff to ASCII)it took more time compared to conversion in ARCGIS.WHy..Is there any logic to reduce the time Thank you. -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/conversion-from-one-format-

[gdal-dev] Re: Hoe to convert ERDAS imagine(.img) files to ARC info ASCII files viceversa

Hai, Jason thanks for your reply Createcopy method works fine.When i am using create copy method at that instance only a file is created in the specified path. But the format of the file is different what i want and another thing is how to get the metadata information from the source dataset

[gdal-dev] Unknown base item type : 4+error occurs when open a *.img file

When i am using the fillowing code i got theerror:Unknown base item type : 4 DataSet ds=GDal.Open(".\File1.IMG",Access.GA_ReadOnly); why this error ocuurs. thank you. -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/Unknown-base-item-type-4-error-occ

[gdal-dev] Re: Hoe to convert ERDAS imagine(.img) files to ARC info ASCII files viceversa

yeah.. I saw that utility in the fwtools\bin folder. But it gives some error,when i added the reference to my C# project. Actually i need to do this task programatically. This class is available in any other dll can u tell me please. thank you -- View this message in context: http://osg

[gdal-dev] Re: Hoe to convert ERDAS imagine(.img) files to ARC info ASCII files viceversa

Thanks agian... Already i downloaded Fwtools and installed. I read the link u gave me. Which class i have to instantaite to call gdal_translate() and from which dll i have to take the reference. can u tell me please. -- View this message in context: http://osgeo-org.1803224.n2.nabble

[gdal-dev] Re: Hoe to convert ERDAS imagine(.img) files to ARC info ASCII files viceversa

Thanks for ur reply. I don't know how to use GDal_translate.Can u explain me how to do this thank u... -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/Hoe-to-convert-ERDAS-imagine-img-files-to-ARC-info-ASCII-files-viceversa-tp5068801p5069012.html Sent from the GDAL -

[gdal-dev] Hoe to convert ERDAS imagine(.img) files to ARC info ASCII files viceversa

Hai , I am very new to use this GDAL libraries. I feel very difficulty to work with this libraries particulaly using C#.Because very less documentation is available for C#.Can any body help me how to convert ERDAS imagine(.img) files to ARC info ASCII files and ASCII files to .Img files. If anybo