Accessible through menu option Signal tools/Probability distribution/Histogram or toolbar
Probability distribution/Histogram function divides signal’s amplitude range in consecutive
segments (bins) and calculates the probability of signal value to fall into a certain segment or the
count of value occurrences falling in that segment.
The resulting curve displays bins (i.e. their lower limit values) at the X-axis and probability in [0,1]
range or number of values on Y-axis.
Following settings can be made in the corresponding dialog :
Show Y-axis values as combo-box determines if probability or number of occurrences in one
segment will be displayed.
Number of bins is a crucial settings for the calculation of distribution /histogram graphics. It
determines in how many segments will SIGVIEW divide signal’s
amplitude range into. You can let SIGVIEW determine that number automatically by using one of following algorithms:
· Square Root: number of bins is equal to sqrt( number_of_samples )
· Sturge's Rule: number of bins is equal to log2( number_of_samples ) + 1
· Scott's Rule: number of bins is equal to 3.49 * stdev( input_signal ) /
You can also set number of bins manually to a fixed value (in the range 5...10000)
By using Properties... option in the context menu on already created Probability distribution /
Histogram window, you can change any of calculation parameter and recalculate the content of
Probability distribution / Histogram window default display type will always be "Histogram". You
can change it by using Signal display options.