Imagery refers to raster based datasets acquired from sensors on satellites or aircraft.

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5answers
153 views

Where can I get high-resolution (at least 1 foot) imagery of California?

Is there a national site or state site that will allow me to download High Res (1') aerial imagery of California? I have tried Cal-Atlas Download but they are at one meter. I have also tried USGS ...
2
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2answers
51 views

Memory and Processing Efficient Approach to Read a Timeseries in Python

I am trying to store a timeseries of high resolution raster images containing NDVI values into a dictionary for calculations. I am curious as to which approach may the most efficient when loading ...
2
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1answer
44 views

From where I can get 4-band satellite imagery of Sweden?

I'm looking for good quality, fine resolution 4-band satellite photos of Sweden for academic use (and I'm willing to pay for it). What I'm after is as detailed as possible photos of certain part of ...
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1answer
28 views

How to use the Cartographic Composer of GRASS 6.4.3?

Following on from my previous question (which was, again, how to use the Cartographic Composer)... I've got a GIS in GRASS. I need to print various bits of it. Problem is, it needs images on it ...
0
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1answer
112 views

Projection to use with satellite image from Google Maps / Earth

I'm very new to anything concerning GIS so please forgive me if this question has been asked before, but I assure you, I've been trying to find an answer for quite some time now. Of course it is ...
0
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1answer
143 views

How to modify 2 raster images to have the same resolution?

I have data for 2 rasters images that have different resolutions: z downloaded from trmm An MSAVI2 output image. For calculating the correlation between them, the data has to be in the same ...
3
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0answers
190 views

Novel ways of filling in missing values in a raster

I am looking for robust ways to fill in missing values in some rasters. They all have a single layer. Missing values consist of single pixels to medium sized patches. Rasters are around 1000 x 1000 ...
2
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0answers
80 views

Is there a tutorial explaining the basics of WMS?

I'm building some software that needs to download satellite map images to display behind some survey charts. I understand that, to download these images, I need access to a Web Map Service. The only ...
2
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0answers
337 views

Automated testing for GIS apps

There are several commercial and opensource tools for regression automation. While many of them could be employed to test GIS apps, they fall short, at times, dealing with the unique characteristics ...
2
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0answers
80 views

Are there any naming conventions for aerial imagery?

Do GIS projects involving high resolution NAIP quarter quad imagery typically use the USGSID code and qq (e.g. 3910232ne) or the GNIS code and qq (e.g. 39102e1ne) to organize data? I can't seem to ...
2
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0answers
835 views

Clipping MrSID files

Does anyone have experience subsetting/clipping a large NAIP imagery file in MrSID format? Some of the NAIP files we have are by county and they have really large file sizes. The files are from the ...
1
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0answers
39 views

How to perform image classification with SemiAutomaticClassificationPlugin and BIP files?

I have multiband satellite images BIP format, Landsat TM/ETM containing 7/8 bands respectively along with a separate header file, some of them corrected by nearest neighbour classifier. I'm working ...
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0answers
57 views

Load MrSID file in QGIS 2.2 on Ubuntu 13.10

Is there a way to do this? I have tried a number of the write ups on this, and it appears that libgdal-mrsid-src no longer exists. Is there any other workaround? USDA NAIP imagery is sent as MrSID. ...
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0answers
87 views

ESRI imagery service that is WMS Compliant

I want to use the ESRI free online imagery service http://services.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer But I want a service that is WMS compliant. Is there a version of ...
1
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0answers
186 views

Raster satellite images for QGIS

When I try to apply a downloaded GIS satellite (t=rimage to Quantum, it doesn't seem to open properly. There must be a step-by step description on how this would be done effectively. Can anyone tell ...
1
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0answers
225 views

Assign Custom Band Combination To Image Catalogs In ArcGIS

I have an image catalog composed of 4 band rasters. I would like to use the same image catalog, and set custom renderers for a true color and false color combination and save each of those catalogs ...
0
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0answers
18 views

How can I add aerial imagery using REST services as a basemap in CartoDB?

I want to add my county's aerial imagery as a basemap in CartoDB, same as I use in OSM's iD editor but it is not loading. I am adding in the XYZ url as this: ...
0
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0answers
77 views

Mosaic Dataset would not show raster unless you zoom in further to around 1:2,500 scale?

So when I make a copy the Mosaic Dataset File GeoDatabase to my external hard drive and then copy it to my computer. It would show the checkerboard at the full extent but when you zoom in it would ...
0
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0answers
61 views

Empty raster returned after GRASS i.atcorr with Landsat8 data

I've searched at length on previous forums but no solution seems to work for me. I'm trying to run the i.atcorr module on GRASS (version 6.4.3 on a Macbook Pro, Mavericks OSX) with Landsat8 imagery. ...
0
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0answers
52 views

Need help with GeoExpress 9 by LizardTech/ArcGIS Server 10.1

This is a multi-part question and after much reading on different forums I still could use some help/advice. My setup: ArcGIS Desktop 10.1, Dedicated Server for GIS data with SQL Server 2008 R2 and ...
0
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0answers
133 views

Top-of-atmosphere reflectance conversion with WorldView-2 images

I recently received a set of radiometrically-corrected dynamic range adjusted 8-byte WorldView-2 images. I want to convert to top-of-atmosphere reflectance and would like to use the FLAASH in ENVI 4.8 ...
0
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0answers
187 views

viewing GMapCatcher downloaded tiles in ArcGIS Explorer? (as basemap?)

We have a full set of 20 zoom levels of downloaded satellite imagery that we downloaded with (and view in) GMapCatcher - great program! All of these operations are done offline (for a Search and ...
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0answers
38 views

Satellite Imagery for North America with options for different CRS

Ok, everyone I think this question has been asked before and maybe there is no answer yet. I need a satellite imagery layer of North America where I can change the projection. The OpenLayers plugin ...