Patch for ALL users with the following changes:

(1) Fixed the problem that when a parameterization file (.frg) is openned, modified, and saved under a different name, the original file name was reported in the log window. Current build correctly reports the new file name as the saved file.

(2) nLSI is not available anymore in the Moving Window analysis mode if the window is round due to theoretical limitations in the algorithm that is akin to trying to fit a square block in a circular hole.

(3) Fixed a bug that caused the program to crash when using older .frg files.

(4) Added a Search tab in the help file.

(5) Fixed a bug that caused the program to crash when selecting Euclidian Nearest Neighbor patch deviation statistics in very simple landscapes (e.g., one patch per class).

(6) Fixed several floating point exceptions that caused the program to crash under very specific conditions (not realized by most users).

Patch for ALL users with the following changes:

(1) Fixes a bug in the normalized landscape shape index (nLSI) that caused FRAGSTATS to crash when the entire landscape consisted of a single patch. nLSI is reported as N/A in the output files whenever the maximum class edge equals the minimum class edge, which occurs when either the focal class consists of a single cell, all but one cell, or the entire landscape, because it impossible to distinguish among levels of aggregation in these cases. This is mainly a concern in the moving window analysis, because these conditions can be frequently encountered at relatively small window sizes as the window moves across the landscape.

Patch for ALL users with the following changes:

(1) Fixes a problem associated with the related circumscribing circle index (CIRCLE) and contiguity index (CONTIG) when all patches have the same index value (causing a floating point error in the coefficient of variation calculation).

(2) Fixes a couple of problems associated with the related circumscribing circle index (CIRCLE). First, when single-cell patches exist, CIRCLE was undefined, causing FRAGSTATS to crash. This has been fixed. Second, we also noted a problem with very small patches, say < several cells. The patch diameter is determined by finding the maximum distance between periphery cells, and this distance is used to calculate the area of the circumscribing circle. Previously, we were using cell center-to-cell center distance calculations, but this created problems for very small patches (i.e., causing negative values of the index in extreme cases). To avoid this problem, we changed the distance calculations to cell outer edge-to-outer edge. Thus, the circumscribing circle now completely circumscribes all parts of all cells in the patch and the index.

Update for ALL users with the following changes:

(1) Includes several new metrics, including the normalized landscape shape index (nLSI), related circumscribing circle index (CIRCLE), contiguity index (CONTIG), connectance index (CONNECT), and the associated patch deviation statistics at the patch level and patch distribution summary statistics at the class and landscape levels. For the details, see the Metrics documentation.

(2) Adds support for ArcGIS. FRAGSTATS will accept Arc Grids with EITHER a valid ArcGIS license OR ArcView Spatial Analyst installed. For the details, see the User Guidelines--Data Formats.

(3) Adds limited command line execution of FRAGSTATS. In essence, FRAGSTATS can be called up, a parameterization file specified, and executed from a single command line. This allows FRAGSTATS to be executed from within another program. However, the parameterization file must be built using the standard FRAGSTATS graphical user interface. For the details, see the User Guidelines--Running via Command Line.

(4) Incorporates a slight modification to the Shape Index (SHAPE) and Landscape Shape Index (LSI) to reflect a more accurate and meaningful way to standardize the shape index. Specifically, the minimum perimeter used to standardize the metric was adjusted to reflect the perimeter of a maximally compact patch or class in a raster format, which may not be (and typically is not) a square (which was used in the previous algorithm).

(5) Corrected a bug in outputting patch ID files for ERDAS .img formats.

(6) Eliminated the dependancy of the adjacency output file on the selection of the landscape-level contagion (CONTAG) metric. Now, the adjacency matrix can be output regardless of metric selection.

(7) Completed an overhaul of the FRAGSTATS Help System. All FRAGSTATS documentation is now avialable from the Help Menu at the openning window of FRAGSTATS; it is no longer necessary or possible to download the Help documentation separately. However, the new HTML Help system requires the Microsoft HTML Help Viewer. Most computers with a Windows operating system have the file already, so a download will only be necessary for a slim minority of users, if any. It comes usually with Internet Explorer. If by chance you do not have the HTML Help Viewer, it is available for free at the following
location: http://msdn.microsoft.com/library/default.asp?url=/library/en-
us/htmlhelp/html/hwMicrosoftHTMLHelpDownloads.asp as "Hhupd.exe".

(8) Corrected a bug in outputting adjacency information in the adjacency file. Single-cell classes where not listed in the adjacency file. This has been corrected and now all classes, regardless of size, are reported in the adjacency file.

3.2 (build 1)

Update for ALL users with the following changes:

(1) Includes all patch deviation metrics described in the Metrics documentation. These metrics provide a measure of deviation of each patch from the mean patch metric value for the corresponding class or the landscape as a whole, as well as the percentage of the patch distribution smaller than the observed patch metric value. For the details, see Metrics--Patch Metrics.

(2) Adds support for 8-bit images associated with binary, ERDAS, and IDRISI files, but with some limitations. For the details, see User Guidelines--Data Formats.

(3) Provides support for specifying zero as the background class value, but with some limitations. See the User Guidelines--Data Formats for the details.

(4) Incorporates a slight modification to the Clumpiness Index (CLUMPY) to correct for a problem in the original formula. For the details, see Metrics--Contagion/Interspersion Metrics--Clumpy.

3.1 (build 5)

Patch for ALL users with the following changes:

(1) Changes the computation of the Euclidean Nearest Neighbor (ENN) metric at the landscape level. Previously, the mean, median, range, standard deviation, and coefficient of variation in ENN at the landscape level included all patches with or without a neighbor. Patches without a neighbor (i.e., single patch classes) were incorrectly being assigned a value of zero, which of course influenced all of the patch summary statistics at the landscape level. Now, these no-neighbor patches are omitted from the calculations.

(2) Fixes a problem associated with outputting patch ID files for IDRISI images. FRAGSTATS now outputs patch ID files for IDRISI images; however, the patch ID file is limited to 32,767 unique patches because IDRISI only supports 16 bit signed integers.

(3) Fixes a memory leak that caused crashes during moving window analyses on very large grids with limited computer memory.

Patch for ALL users with the following changes:

(1) Fixes another bug in the area-weighted mean disjunct core area metric (DCORE_AM) at the landscape level. This one should be correct now.

(2) Fixes a number of problems with reading ERDAS files and adds support for ERDAS 8 .img files. Specifically, this build now accepts ERDAS 7 (.gis and .lan) files, although there are a number of limitations with these formats, as well as ERDAS 8 (.img) files. For the details, see User Guidelines--Data Formats for details.

(3) Changes the units of the DIVISION metric from a percent to a proportion to be consistent with its interpretation as a probability.

(4) Changes the comments in the Metrics document associated with the DIVISION and MESH metrics to describe their relatedness to the area-weighted mean patch size (AREA_AM) metric.

(5) Fixes a bug in the browse dialog for batch files. The landscape ID field was not associated correctly with the metrics in the browse dialog box, even though they were correctly associated in the output files when saved.

Patch for ALL users with the following changes:

(1) Introduces a new format for all secondary data files used in the calculation of certain metrics, including the edge depth file associated with core area metrics, the edge contrast weight file associated with contrast metrics, and the similarity weight file used in the similarity index. Note, this is a required patch. The older file formats will not work with this release and all subsequent releases of FRAGSTATS. For details on the new file formats, see User Guidelines--Selecting and Parameterizing Patch, Class, and Landscape Metrics.

(2) Fixes a bug in the area-weighted mean disjunct core area metric (DCORE_AM).

(3) Fixes a bug associated with reading ASCII and binary images containing a landscape border. Specifically, if the landscape border contained unique class IDs (i.e., patch types) NOT present in the landscape (i.e., within the landscape boundary), AND those classes did NOT touch the landscape boundary (i.e., no cell of these unique classes shared a side with cells inside the landscape), then the Contagion Index (CONTAG) and Interspersion and Juxtaposition Index (IJI) were computed incorrectly because these unique border classes were included. This bug has been fixed. In the current build, all cells in the landscape border not touching the landscape boundary are ignored in all calculations.