QT GUI Number Sink

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.

Source Files

C++ files

[1]

Header files

[2]

Public header files

[3]

Block definition

[4]