Update Archive
2013.9.17 Version
Macintosh and Windows Versions
File->Open Image
A change was made so that a user can select all 8 files in a Landsat 5 set of image files provided by the EROS Center to link the Landsat TM bands in wavelength order. The jpeg file will be ignored.
Processor->Display image
After displaying a multispectral image in 1-channel grayscale or 1-channel thematic modes, one can now use the right arrow key to view the next channel in order. One can use the left arrow key to go to the previous channel. The key combination of shift & up arrow goes to the last channel in the file and shift & down arrow goes to the first channel in the file. The same display enhancement settings are used for each display. In other words it is just a fast way of selecting Processor->Display Image, changing the channel number and selecting "OK". If one holds the right or left arrow keys down, the images will be drawn as fast as possible.
Processor->Reformat->Change Image File Format
A change was made to allow one to select BIS-Band Interleaved by Sample (or Pixel) as a band format for generating TIFF/GeoTIFF formatted files.
2013.6.6 Version
Macintosh and Windows Versions
File->Open Image
A change was made so that a user can select all 12 files in a Landsat 8 set of image files provided by the EROS Center to link the OLI and TIRS bands in wavelength order. Any band 8 (panchromatic) or BQA files in the selection will be ignored.
Windows Version
File->Open Project
A problem was fixed which caused MultiSpec to not be able to read project files created with the 2013.5.18 (previous) version. This problem only affected the Windows version.
Also a problem was fixed which caused an extraneous message about the number of open windows being limited to 50 when opening a project image window in some situations.
2013.5.18 Version
Macintosh and Windows Versions
Processor->Display image
Some changes were made in calculating the default thematic data value ranges for 1-Channel Thematic Displays to handle a broader range of data types and values.
Processor->Reformat->Convert Shape File to Thematic Image File
This processor now works with shape files containing polygons. The output thematic image will contain the shape file identifier value for all pixels that are included within the polygon. A .clr file will be created which contains the labels for each of the polygons. The labels will come from the first three fields in the dbf file associated with the shape file if it exists. Otherwise the label will be "Shape Record n" where n represents the shape file identifier. The label string is limited to 31 characters. The dbf field values are separated by "_". A .clr file will not be created if there are more than 2000 classes.
The shape file that will be used by default for this processor is the first one that is drawn in the active image window. The resulting thematic image will be the same size as any selection in the active image window or the same size as the active image window if no selection exists.
An application for using this feature is to create a thematic image from a shape file which represents training or test areas. The resulting thematic image can then be used to define the training or test areas in a project.
This feature has not been tested on a lot of different shape files. Let me know if you run into problems using it.
Processor->Statistics
Data sets other than the first one in hdf5 formatted files can now be used as base images for a project.
2013.3.23 Version
Macintosh and Windows Versions
File – Open Image
MultiSpec will recognize the Landsat 8 band sets starting with LO8 (OLI bands) and LT8 (TIRS bands) provided by the EROS Center and link them in wavelength order no matter the order they are in the open image file dialog box.
Processor->Reformat->Change Image File Format
An option has been added to the Transformation dialog box to allow one to adjust all of the selected channels in the image file by the data values in a selected channel. An application for this feature is to adjust all of the data in a file containing accumulated growing degree days with one channel for each day of the year by the data for a single channel (date) so that all of the accumulated growing degree days are referenced to a planting date rather than the start of the year.
Macintosh Version
File – Open Image
A problem was fixed which caused MultiSpec to crash for OSX 10.8 when opening more than 100-200 image files at a single time. The crash was due to the limit for the number of open files. This limit is now set to a much higher value when MultiSpec first opens.
2013.3.14 Version
Macintosh and Windows Versions
File – Open Image
A new feature was added to this version to allow one to more quickly link individual files together. One can now make multiple image file selections in the open image file dialog box. There are three possible choices in handling the selected files: do not link (open in separate image windows), link to the active image window (if it is a multispectral window) and link selected files to a new image window. The limit for the number of files to link is 500. This feature has been used to link up to 366 weather images representing daily min or max temperature for a year. Note that any selected shape files in a multiple link set of files will be ignored. Also any files which contain a different number of lines and columns than the first image in the set will be ignored. A message to this effect is listed in the output text window.
Related to the above feature, MultiSpec will recognize the individual Landsat bands provided by the EROS Center and link them in wavelength order no matter the order they are in the open image file dialog box. This includes the files for Landsat MSS, TM, ETM+ and the OLI & TIRS (Landsat 8) data. So the new process for linking is to select the Open Image file menu item, select the files to be linked, close the dialog box and select OK to display the image with the default band combination. One can then use the Reformat->Change Image FIle Format processor to create a new combined image file.
Processor->Display Image
Changes have been made in default thematic enhancement settings for displaying 1-channel thematic images to handle a broader range of cases for data ranges in 32-bit integer and 32-bit & 64-bit float data values.
Processor->Reformat->Change Image File Format
The transformation dialog box now contains a feature to allow one to create a new image which is a function of the channels in the image data. The available functions are minimum, maximum, average, sum, median and kth smallest value. This was done for a project involving weather image data. For example, the feature has been used to compute summation of growing degree days where the individual channels represent gdd for each day of the year.
Default file names are now provided for the new output image data sets instead of just "image file". The default name is based on the input data set name. It won't be perfect for all but maybe the base name provided will be a good start.
The reformat specifications are now saved from one run to another. The purpose was to save mouse clicks and therefore time. Checks are made though to account for significant changes in the input files from one run to another which require the specifications to be re-initialized. Let me know if you run into problems with this feature.
The instrument name if known has been added to the TIFF/GeoTIFF image description text tag. It is also read by MultiSpec when opened up later to be included with the information that is listed for the image and to allow inclusions of the wavelength information if available.
General
Tutorial 5 was updated to reflect the new method to link individual files together..
Macintosh Version
Drawing Vector (Shape) Files
Drawing vectors (shape files) over images is now significantly faster.