Difference between revisions of "QT GUI Frequency Sink"
From GNU Radio
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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 == | |
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| − | 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]] | ||
Latest 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[edit]
- 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[edit]
