The observed biophysical cover of the earth's surface. Data are essential elements in a wide array of government and private sector activities, including inventory, management, monitoring, and modeling.

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1answer
24 views

How to define a threshold in Principal Component Image for Urban mapping?

I am working on an Urban mapping and i would like to know how i could define a threshold value for extracting built-up areas from a PC (Principal Component) Image ? I am interesting on how to ...
-1
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0answers
32 views

Landcover data for the Korean penninsula needed

I am currently working on a project for the Korean Penninsula and I need land cover data. I have my elevation rasters, and imagery rasters, all I need is land cover for a piece of software to operate ...
3
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0answers
45 views

Using original Landsat multispectral image or pan-sharpened image in land cover classification?

I am currently creating land cover maps of a number of national parks across Asia from Landsat 8 imagery and also later from SPOT imagery. I plan to use supervised classifications in ERDAS IMAGINE and ...
1
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0answers
16 views

Spatial decision support tools for spatial planning, licensing, and permitting, alternative to FlexiCadastre? [closed]

I'm tasked to design and develop an information management system, i.e. GIS-based spatial decision support system to guide, inform, evaluate, and monitor regulatory processes in spatial planning, ...
5
votes
2answers
87 views

How to differentiate between bare soil and urban areas in Landsat 4-5 land cover classification?

I am trying to classify a Landsat 4-5 image using the semi automatic classification plugin (QGIS). I always get misclassifications between bare soil and urban areas as they have similar spectral ...
2
votes
1answer
15 views

Finding high-resolution land cover data for Taiwan?

So far, the best data I've found is from Globeland 30 (30 m), but the data for Taiwan is not very discriminant in partitioning the landscape. Does anyone know of better resolution data?
0
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2answers
30 views

land cover data bc canada

I am hoping to map vegetated (trees and open veg) for the lower mainland in BC, Canada. I guess what I want is a Land Cover map. Does this exist for download anywhere or will I need to user Landsat ...
1
vote
0answers
20 views

How to create alluvial diagrams for land use change analysis

I have two landuse change maps and I'd like to create some alluvial diagrams to show change over time. This way I can tell what became what. Are there any tools in QGis or other GIS that can create ...
0
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0answers
107 views

Object-based classification using R and Orfeo Toolbox

I am trying to run an object-based classification using R. The Landsat images were segmented using Monteverdi (Orfeo Toolbox) and training samples (segments) were selected. My problem is that the ...
0
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0answers
27 views

Finding Land Cover colormap (*.clr) for IGBP Land Cover Classification?

Where can i find a land cover classification colormap (*.clr) for IGBP land cover classes? How can i apply the legend colors on the land cover classes? I'm using ArcGIS.
1
vote
0answers
57 views

Resample not changing the cell size

I am trying to use the Resample tool in Spatial Analyst to go from a 1kmx1km grid to a 500mx500m grid for increased resolution of my land use data. My cell size is 0.008, and I want a 0.004 cell ...
3
votes
1answer
51 views

Classifying areas in scanned maps (not by colors but by pattern)

I have old land-use maps in a scanned format. I am trying to obtain proper land-use maps from it, similar to what is decribed here: How to compare areas in scanned historical land use maps. The ...
0
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0answers
31 views

Spatial Correlation of Kernel Data & Land Use/Land Cover

Is it possible to extract spatial correlation values between kernel data (from point data) and land use (vector) and land cover (raster)? My goal is to quantify the relationship- if any- between a ...
1
vote
0answers
48 views

Hard wood tree and Soft wood(shrubs) Vegetation Differentiaton

How I Differentiate Hard wood tree (like Mango, Sal) and Soft wood(shrubs like reed) Vegetation using Multispectral or Hyperspectral Image? I have TM, ETM, OLI, Hyperion, Aster Image and ERDAS 2011, ...
0
votes
2answers
84 views

Classification of digital orthophoto

I have digital orthophotographs from 2013 that I'm attempting to classify in an effort to extract all the cultivated/pasture land from. I'm using the "Reclassify by Ascii File" tool for this ...
2
votes
2answers
72 views

What CRS is the USGS Global Land Cover Characteristics Data Base?

I have trouble bringing land cover data from the USGS into a "decent" coordinate system. I obtained an .img file of the "Global Land Cover Characteristics Data Base Version 2.0" from ...
0
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0answers
105 views

Combining tiff with shapefile

I have a geotiff image with a D_WGS_1984 Datum of land cover for the continental US and I want to be able to merge it with a US counties shapefile. What is the fasters and best way to do this? My ...
1
vote
1answer
52 views

Calculating ground cover along a path

I'm trying to figure out an efficient way of pulling data about ground cover along a specific path, where I know the starting lat/long and the end lat/long. I've found that the USGS has ground cover ...
3
votes
1answer
94 views

Problems with Reclassify and RemapRange in ArcPy?

I'm having a bit of trouble with a script that uses ArcPy. I keep getting the following error: ExecuteError: ERROR 000622: Failed to execute (Reclassify). Parameters are not valid. ERROR 000628: ...
1
vote
2answers
179 views

Use Google Earth for land cover classification accuracy evaluation?

I am doing land cover classification with an hyperspectral image of Santa Barbara, CA. The spatial resolution is 6.4 meters but I couldn't find any high spatial resolution land truth data for ...
1
vote
0answers
85 views

What kind of raster mosaicking to use in land cover analysis

I have to mosaic two rasters (Landsat ETM+ scenes) to one single image and then analyse its land cover. Which option to use to avoid seeing a distinct line in the place where two different ...
2
votes
2answers
240 views

land Use land cover classification

I am working on Land Use/Land Cover Classification of the Hindon river(India) watershed extracted using Aster DEM. Landsat 8 scenes had been used and mosaicked for the required AOI using the Watershed ...
1
vote
0answers
65 views

how to use arcGIS to calculate the Conversion Probability certain land use to other land use?

I am doing dissertation about [predicting future urban expansion for Shannon River Basin In Ireland using Cellular Automata model and arcGIS] so at this stage I would like to calculation the ...
0
votes
2answers
80 views

GlobCover 2009 dataset - importing legend and colormap values into R

Does anyone know how to import a legend for a raster layer (loaded as a .tif) into R such that it can be attached to the raster file itself and used in plotting? In this case, I am using the GLC2009 ...
0
votes
1answer
73 views

Land cover modifications in different time periods

I have several shapefiles which contain buildings built in different periods from 1948 to 2013. My question is how could I see which buildings for example in were built 1948 but are missing in later ...
1
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0answers
37 views

LULC using SAR data

I have a Geocoded SAR data with me. I have to perform LULC classification. I have been given a shapefile (vector data) with the different LULC categories of the region. The region is mainly composed ...
3
votes
1answer
145 views

How do you classify unclassified pixels in a land cover geotiff tile?

While printing out the raw pixel values of a GEOTIFF land cover tile I found 90 % of pixels have normal values i.e. those that the documentation describes (8 bit integers describing a land cover ...
1
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0answers
68 views

Effects of heterogeneous vegetation in mapping canopy cover using randomForest in R

I have a 5.8 m resolution satellite image (LISS IV by IRS-P6, in bands 4, 3 and 2) of a densely forested region in the Eastern Himalayas. My objective is to predict regions of canopy cover. Regions of ...
1
vote
1answer
116 views

The stability of randomForest models after increasing predictor variables

With reference to the posts: Incorporating terrain data to predict canopy cover using randomForest in R and Random-Forest Classification of 10cm Imagery for species-distribution in R (no point-shapes) ...
2
votes
1answer
118 views

Incorporating terrain data to predict canopy cover using randomForest in R

This is a subjective question. Thank you bearing with me. I have a 5.8 m resolution satellite image (LISS IV by IRS-P6, in bands 4, 3 and 2) of a densely forested region in the Eastern Himalayas. My ...
0
votes
1answer
137 views

Creating raster depicting landcover/use change in ArcMap?

How would I create a conversion matrix in ArcMap 10.2.2 to display the changes between two rasters (Land Use Land Cover Maps)? I have produced Land Use Cover Change maps from temporal satellite ...
1
vote
0answers
257 views

Legend of CORINE land cover in ArcGIS 10.x layer file

I am looking for the legend of Land Cover (Corine Land Cover) for ArcsGIS 10.x. as a layer (.lyr) file. I want to symbolize the classes without setting the RGB color values one by one; especially for ...
2
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0answers
56 views

Calculate cover loss between years using r.mapcalc

I am working on forest cover raster data for 2 years and am interested in areas with >5% loss in forest cover. I am pretty new in GRASS GIS, so any suggestions for how to create a difference map of ...
4
votes
2answers
146 views

Random Forest to estimate land use in past with Landsat

I am new in Machine Learning and in R. I am working in my Master thesis. I am trying to estimate the LULC of the years 1984, 1990, 2000, 2011, 2014 for characterizing the forest dynamics. I have for ...
2
votes
2answers
100 views

Calculating forest connectivity for raster

I'm trying to calculate some sort of forest connectivity value for each pixel in my land cover classification. I would like to do this by calculating how many other forest pixels are directly ...
0
votes
1answer
54 views

When parametric classifiers fail?

In which situations are statistical assumptions (e.g. multivariate normal distribution within spectral classes) for parametric classifiers (e.g. maximum likelihood ) not valid for land-cover ...
4
votes
3answers
182 views

Estimating vegetation composition from digital images

I am running a Master's project researching Greater prairie-chicken nest and brood survival. Some of my intended covariates include local vegetation measures using digital imagery. I would like to use ...
2
votes
2answers
222 views

How calculate pixel by pixel the mode (statistic) of multiple rasters (geotiff)?

I have 12 land cover maps, and I would like to calculate the mode to each pixel of the 12 maps (they have the same resolution and dimension). I mean, the final map would be the mode for each pixel of ...
1
vote
2answers
178 views

Calculating gain and loss area of vegetation land from two lines representing different years using ArcGIS for Desktop?

How can I calculate a gain and loss area of vegetation land having two different lines that represents vegetation in different years. Edit: There are two polylines, one represents the edge of ...
1
vote
1answer
150 views

Globcover 2009v2.3 Legend Qgis

How can I add a legend to a raster to the Globcover land cover dataset in QGIS without plugins? The data can be found here http://due.esrin.esa.int/globcover/ Unfortunately, as far as I know, QGIS ...
3
votes
0answers
143 views

How to calculate areas in raster files

I got three files. The first is a shape file for country boundaries and the second and third are two raster files with the global land covers for 2005 and 2009. I'm thus encharged to calculate the ...
3
votes
1answer
152 views

Estimating tree cover (or other vegetative cover) over impervious cover using NLCD data

Has anyone attempted to estimate tree cover or general vegetative cover over impervious cover using the NLCD data sets? The provided layers (land classification, tree cover, impervious cover) could ...
1
vote
1answer
55 views

Automation of Land Use composition in ArcGIS

I am using ArcGIS 10.1 and I have two shapefiles I'd like to process: A Polygon shapefile with 1000 features representing lakes covering a specific area, and; A Polygon shapefile with the Land Use ...
2
votes
0answers
60 views

filling the attributes according to intersection of two layers (Postgresql)

How to automatically fill attributes of a point layer according to the exact position in the polygon layer? I mean how to write a command in PostgreSQL to automatically fill the attributes by the ...
6
votes
1answer
196 views

Creating forest patches from land cover layer?

I have a land cover layer from which I've extracted the tree canopy class and set all values that are not tree to NULL. I've also converted it to a vector and exploded it to make single part features. ...
2
votes
1answer
271 views

Reclassify on land cover raster won't work

I'm new to GIS so I apologize if this question is basic but I couldn't find my answer online. I'm trying to reclassify a land cover raster from the National Land Cover Database. I want to reclassify ...
4
votes
4answers
1k views

Extracting tree crown areas from remote sensing data (visual images and LiDAR)

I am looking for a method to process a remote sensing image and extract the crown areas of the individual trees from the image. I have both visual wavelength areal imagery, and lidar data from the ...
1
vote
0answers
108 views

Comparing unclassified super-objects with classified sub-objects

I have two shapefiles exported from ecognition. the first shapefile contains the land cover classification and the 2nd one contains unclassified superobjects of the 1st shapefile. I want to compute ...
0
votes
0answers
52 views

Total area of ArcGIS Intersect output is NOT equal to the smaller input?

I have two polygon inputs that share the same projected coordinate system - one is land cover data, the second is parcel data (of smaller total area). When I execute a standard geoprocessing ...
2
votes
3answers
536 views

Equivalent of CORINE land cover data sets for rest of world

I am looking for the equivalent of CORINE land cover data sets (100 meters) for the rest of the world; not merely urban areas but any area in general. I see sousa's question unanswered so I thought I ...