QT GUI Frequency Sink: Difference between revisions
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The sink supports plotting streaming float data or messages. The message port is named "in". The two modes cannot be used simultaneously, and should be set to 0 when using the message mode. GRC handles this issue by providing the "Float Message" type that removes the streaming port(s). | The sink supports plotting streaming float data or messages. The message port is named "in". The two modes cannot be used simultaneously, and should be set to 0 when using the message mode. GRC handles this issue by providing the "Float Message" type that removes the streaming port(s). | ||
== Parameters == | |||
Example Flowgraph | ; fftsize | ||
: size of the FFT to compute and display. If using the PDU message port to plot samples, the length of each PDU must be a multiple of the FFT size. | |||
; wintype | |||
: type of window to apply (see gr::fft::window::win_type) | |||
; Center Frequency | |||
: center frequency of signal (only used for x-axis labels) | |||
; Bandwidth | |||
: bandwidth of signal (used to set x-axis labels) | |||
; Name | |||
: title for the plot | |||
; GUI Hint | |||
: See [[GUI Hint]] | |||
== Example Flowgraph == | |||
[[File:Freq-sink-ex.png|700px]] | [[File:Freq-sink-ex.png|700px]] | ||
Revision as of 03:12, 15 July 2019
A graphical sink to display multiple signals in frequency.
This is a QT-based graphical sink the takes set of a floating point streams and plots the PSD. Each signal is plotted with a different color, and the and functions can be used to change the lable and color for a given input number.
The sink supports plotting streaming float data or messages. The message port is named "in". The two modes cannot be used simultaneously, and should be set to 0 when using the message mode. GRC handles this issue by providing the "Float Message" type that removes the streaming port(s).
Parameters
- fftsize
- size of the FFT to compute and display. If using the PDU message port to plot samples, the length of each PDU must be a multiple of the FFT size.
- wintype
- type of window to apply (see gr::fft::window::win_type)
- Center Frequency
- center frequency of signal (only used for x-axis labels)
- Bandwidth
- bandwidth of signal (used to set x-axis labels)
- Name
- title for the plot
- GUI Hint
- See GUI Hint
Example Flowgraph
