QT GUI Number Sink: Difference between revisions

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[[Category:Block Docs]]
[[Category:Block Docs]]
[[Category:Stub Docs]]
Displays the data stream in as a number in a simple text box GUI along with an optional bar graph.  
This is the template for the [[:Category:Block_Docs|"Page-per-block Docs"]].  This first section should describe what the block does and how to use it, using however many paragraphs necessary.  Note that the title of the wiki page should match the block's name in GRC, i.e. the one defined in the block's .grc file.  Look at the [[FFT]] Block for a good example.


As this is a basic template, it's also in the [[:Category:Stub_Docs|"Stub Docs category"]]. Please improve it.
The displayed value can be the average of the input stream, in which case all items received are averaged. If not averaging, the display simply samples a value in the data stream based on the update time of this block.
 
Note that due to a flaw in the implementation, this block cannot receive integer value inputs. It will take chars, shorts, and floats and properly convert them by setting itemsize of the constructor to one of these three values (sizeof_char, sizeof_short, and sizeof_float, respectively). If using integers, the block treats these as floats. Instead, put the integer input stream through an [[Int To Float]] block.


== Parameters ==
== Parameters ==
(''R''): <span class="plainlinks">[https://wiki.gnuradio.org/index.php/GNURadioCompanion#Variable_Controls ''Run-time adjustable'']</span>
(''R''): <span class="plainlinks">[https://wiki.gnuradio.org/index.php/GNURadioCompanion#Variable_Controls ''Run-time adjustable'']</span>


; Param 1 (''R'')
; Name
: Description of parameter, provide any tips or recommended values.  Note that the name of the parameter above should match the param's label that shows up in grc (e.g. Sample Rate).
: Name of the display
 
; Autoscale
:
 
; Average
: Averaging coefficient (0 - 1)


; Param 2
; Graph Type
: blah blah blah
: The bar graph can be set to horizontal (NUM_GRAPH_HORIZ), vertical (NUM_GRAPH_VERT), or no graph (NUM_GRAPH_NONE).
 
; Number of Inputs
: Number of signals connected to sink
 
; Min
:
 
; Max
: 
 
; Update Period (''R'')
:
 
; GUI Hint
: See [[GUI Hint]] for info about how to organize multiple QT GUIs
 
; Line Label
:
 
; Line Unit
:
 
; Line Color
:
 
; Line Factor
:  


== Example Flowgraph ==
== Example Flowgraph ==


Insert description of flowgraph here, then show a screenshot of the flowgraph and the output if there is an interesting GUI.  Currently we have no standard method of uploading the actual flowgraph to the wiki or git repo, unfortunately. The plan is to have an example flowgraph showing how the block might be used, for every block, and the flowgraphs will live in the git repo.
This flowgraph and output show a QT_GUI_Number_Sink. The output shows the instantaneous value of the Signal Source along with a bar graph of that value.
 
[[File:QT_GUI_demo.png|800px]]


== Source Files ==
== Source Files ==


; C++ files
; C++ files
: [https://github.com/gnuradio/gnuradio TODO]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-qtgui/lib/number_sink_impl.cc]


; Header files
; Header files
: [https://github.com/gnuradio/gnuradio TODO]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-qtgui/lib/number_sink_impl.h]


; Public header files
; Public header files
: [https://github.com/gnuradio/gnuradio TODO]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-qtgui/include/gnuradio/qtgui/number_sink.h]


; Block definition
; Block definition
: [https://github.com/gnuradio/gnuradio TODO]
: [https://github.com/gnuradio/gnuradio/blob/master/gr-qtgui/grc/qtgui_number_sink.block.yml]

Latest revision as of 22:18, 19 April 2020

Displays the data stream in as a number in a simple text box GUI along with an optional bar graph.

The displayed value can be the average of the input stream, in which case all items received are averaged. If not averaging, the display simply samples a value in the data stream based on the update time of this block.

Note that due to a flaw in the implementation, this block cannot receive integer value inputs. It will take chars, shorts, and floats and properly convert them by setting itemsize of the constructor to one of these three values (sizeof_char, sizeof_short, and sizeof_float, respectively). If using integers, the block treats these as floats. Instead, put the integer input stream through an Int To Float block.

Parameters

(R): Run-time adjustable

Name
Name of the display
Autoscale
Average
Averaging coefficient (0 - 1)
Graph Type
The bar graph can be set to horizontal (NUM_GRAPH_HORIZ), vertical (NUM_GRAPH_VERT), or no graph (NUM_GRAPH_NONE).
Number of Inputs
Number of signals connected to sink
Min
Max
 
Update Period (R)
GUI Hint
See GUI Hint for info about how to organize multiple QT GUIs
Line Label
Line Unit
Line Color
Line Factor

Example Flowgraph

This flowgraph and output show a QT_GUI_Number_Sink. The output shows the instantaneous value of the Signal Source along with a bar graph of that value.

QT GUI demo.png

Source Files

C++ files
[1]
Header files
[2]
Public header files
[3]
Block definition
[4]
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