Read ye, read ye!
If you download and use Spectrum Viewer, you're bringing all the pleasures and disasters that come with it on yourself.. If, during usage, you die from ecstasy, your CPU explodes, your monitor melts, your hard drive is launched into space, an earthquake flattens your house, WW3 starts, or any other disaster strikes, I will not be responsible. The only reassuring thing I can say to you right now is that the program didn't cause any of these things to happen to me while I used it. Yet. By downloading and using the program you agree that it is at your own risk.
License: Free. You may use Spectrum Viewer Basic for commercial purposes to look at data files. You may copy Spectrum Viewer Basic and give it to your collegues or friends. However, you may not distribute copies of any version of Spectrum Viewer from your own web site, or include any version of Spectrum Viewer in a commercial product which you sell to third parties, without my written permission.
Download Spectrum Viewer Basic 2.6 (6.5MB)
Download Spectrum Viewer Basic 2.6 update (2MB)
Which download file should you choose?
When this is your first install of Spectrum Viewer, use the large file. You don't need to download the update file as well, because the large file contains the newest version.
When an earlier version of Spectrum Viewer is already installed on your computer, use the small file. You can copy the contents over the old files, see readme.txt inside the zip file for instructions.
Spectrum Viewer Plus
Spectrum Viewer Basic is the version publicly available for web download. In Spectrum Viewer Basic some interesting features are disabled, including bitmap loading, drag plot, drag point, statistics, data set text, the trace table and LiveCalc. Spectrum Viewer Plus, where all these features are available, can only be obtained if you register yourself with the user forum. Once registered, you will be able to access the Spectrum Viewer Plus topic which will reveal the link to download Spectrum Viewer Plus. I am doing this to get some usage statistics. I am not using the statistics for any spam or ads (do you see any ads on this site?) but I did spend a lot of time developing Spectrum Viewer and I'd like to know a ballpark figure about how many people find it useful. This will motivate me to keep on developing new features. If you don't want to register, you're still welcome to keep on using the basic version, which is already pretty useful by itself.
I need beta testers to test new versions of the program, and I need comments on what is useful about the program and what is annoying. Please mail me if you are interested to always have the latest version for testing!
Up to 100 levels of undo and redo (default 5)
The XY value displays (on the top right of the graph) are now continuously updated when the mouse is moved, no need to click on the graph to get a value
Drag plot. You can pick up a plot by the mouse and drag it to any place you want. A bit easier than manually giving the numeric values with the shift X and shift Y command.
Copy to clipboard. In order to export the data sets to Excel or similar programs, you had to choose View->Table and then ctrl-a, ctrl-c. With "copy to clipboard" you can skip this step.
Easier drawing of the zoom rectangle. When you want to draw a rectangle to the edge of the graph, you can go over the edge with the mouse, you don't have to position the mouse exactly on the edge anymore.
Improved rectangle draw speed when many plots are loaded (60+)
Many functions now support selecting just a part of a plot by drawing a rectangle before invoking a specific function, like:
"Delete data points" deletes (discards or interpolates by choice) all the data points within a drawn rectangle. Handy for deleting single spikes from a plot. For data sets with a lot of spikes it is better to choose the "delete large spikes" command in the "smooth" menu.
Highly improved "delete offset jumps"
"Draw new data set" works now with dragging, instead of just clicking. Ctrl-Z deletes the last data point(s) you drew, one at a time.
Resample, define a given number of data points and the program spreads them out over your plot. Might be handy when your data points are not x-equidistant.
View Trend now can be done manually, with the up and down arrows you can "thumb through" the data sets
Improved legend, a right-click on a legend name changes it without changing the name in the name window as well
Drag and drop of measure files into Spectrum Viewer
Name panel can be docked/attached to the right hand side of the graph panel
The font of the name panel can now be changed
The "open special format" settings now include axis names and graph title.
The maximum number of data sets that can be loaded is now settable, up to 4000, in case any poor guy needs it :-). Set it low for maximum speed, set it high when you need it. The default is 50.
Some bugs hunted down, squished and eaten... hakuna matata!!
Ctrl-a extension: only select the plots within a rectangle
Select only the plots within a "zooming rectangle"
Histogram of Y values
Perform shift Y and multiply Y only on a selected part of a plot
SVF file format
DDE program control
Several slight changes to make the program more user friendly
By special request: Normalize Y (in the "Position" menu). You can email me with a special request as well and I'll see if I can implement it.
The folder history in the "file open" panel is now saved when the program is closed. It used to contain only the folders opened during a particular session, now it contains all folders opened in the past, up to 15 folders
A minor bug fix that would ask the user a confirmation twice when he wanted to overwrite a file