This option can be used to add one or pair of Poles/Zeros or both by selecting one of the 3 push buttons,
Note: While adding single pole/zero, additional zero/pole at Zero are automatically added to have a valid transfer function.
Clicking on one of these three push buttons will remove all poles/zeros or both depending on the push-button you select,
If this option is set, Poles/Zeros can be added continuously .i.e.,continuous mouse-clicks on the pole-zero plot will add appropriate poles/zeros. If its not set, one of the 3 push buttons PP,ZZ,PZ has to be selected before each mouse-click to add poles/zeros
This option helps to add poles/zeros as conjugate pairs. If this is set, then poles/zeros added using either the push buttons PP,ZZ,PZ or 'Add Pair' menu, are added as conjugate pairs.
This option helps to 'Zoom in' within the Pole-Zero plot, to identify precise location of poles and zeros.
This option helps to select or move already exiting poles/zeros using the mouse, within the Pole-Zero plot. Select this option and then choose a pole/zero in the pole-zero plot. By holding the pole/zero using the mouse, you can move it to different locations. With the movement of poles/zeros, you should be able to see the corresponding variations in the system response.
This option helps to Unlink already existing pole/zero pairs. Use 'Click Enable' to select a pole/zero pair. Then selecting 'Unlink' will unlink the pair and will be converted to separate poles/zeros.
Selecting this option, brings up a dialog box, which helps you to enter the filter coefficients. The dialog box also has options to Import and Export filter coefficients in a MAT file.
The file for Import/Export has a variable filter_co
. This is a cell array with 2 string entries for the 'a'
and 'b'
coefficients.
filter_co{1}
- System denominator coefficients. 'a'
filter_co{2}
- System numerator coefficients. 'b'
Select this option to display the plots in the GUI as a separate figure window. The new figure window has the Pole-Zero, Impulse response, Magnitude and Phase plots.
This radio-button can be used to toggle the red-line display which appears in the Pole-Zero, Magnitude, and Phase plots.
This radio-button can be used to toggle grid display which appears in the Magnitude and Phase plots.
This plot box, displays the complex z-plane with poles/zeros in it. It also indicates system stability by changing the color of the region outside the Unit circle to 'pink' for unstable systems.
This displays the impulse response of the system.
This displays the magnitude response of the system in frequency domain.
This displays the phase response of the system in frequency domain.
This list box displays the co-ordinates of the poles in the system. These locations can be changed, by using the 'Edit' button at the bottom of the list box. This is helpful in precise placement of poles in the z-plane.
This list box displays the co-ordinates of the zeros in the system. These locations can be changed, by using the 'Edit' button at the bottom of the list box. This is helpful in precise placement of zeros in the z-plane.