0
votes
2answers
721 views

Mysterious Problems with .IGE file [closed]

I'm trying to manipulate an .IGE file, which I understand is a raster data format developed by Erdas Imagine. The data I've downloaded is the National Land Cover Database (NLCD) 2006 Percent Developed ...
14
votes
3answers
591 views

Ecological geospatial conundrum

I am looking for a different, more elegant solution to a spatial statistics problem. Raw data consists of an x-y coordinate for each individual tree (i.e. converted to a point .shp file). Although ...
5
votes
2answers
1k views

Moisture Interpretation from Landsat Images

I am working on a "land suitability for crop" project. Can anyone let me know how to get any type of information which can be related to moisture index of soil? I have Landsat 5 data with band 3 and ...
1
vote
1answer
111 views

Dicing large mosaics

What is the best way to take a large mosaiced raster dataset (e.g. from http://viewer.nationalmap.gov/viewer/) and tile it to USGS 3.75 minute quarter quad specs? The problem I am having is creating ...
3
votes
1answer
298 views

Cloud and Snow Differentiation

I am doing unsupervised classification of a mountaneous terrain and I have used 500 classes to classify the land use. In my result, cloud and the snow are categorized in the same class. How do I ...
3
votes
3answers
1k views

Problem with NDVI image value

I'm really happy to find this website. It is very helpful for the learners of Arcgis. Now I wanna ask a question. When i open NDVI image in ENVI, its value is still within the range (-1 to 1). But ...
3
votes
1answer
302 views

To determine phenological events based on Greatest increase NDVI appraoch

I have a problem with a phenological study. The study area is in temperate zone of Asia. I have been doing phenological research using MOD VI product. I wanted to extract phenological events ...
4
votes
2answers
999 views

Net Primary production (NPP) calculation

When I calculate Net primary production (NPP) for a local scale, what kind of software should I use? I always use ENVI, ERDAS, ARCGIS and IDRISI. Is it possible to use these programs for NPP ...
3
votes
1answer
271 views

About FAPAR calculation

I want to calculate FAPAR in different land cover types using max and min value of NDVI. I have a raster image with 9 Land cover types and max, min value of NDVI in each land cover type. But I don't ...