MATLAB: Is data truncated when using Floating Scopes in Simulink 7.0 (R2007b)

simulink

Floating scopes created via Signal & Scope Manager or by checking the "Floating Scope" option in a Scope, do not show the whole range of data. Even with the "Limit data points to last" option unchecked, I do not see the entire range of data. Scope blocks however display the entire range of data.

Best Answer

This is expected behavior when using floating scopes in Simulink 7.0 (R2007b). In wired scopes, the trace is drawn segment by segment. The data from the previous time segments gets logged in a buffer and the full trace is redrawn from this logged buffer. In the case of floating scopes, no buffer is maintained to log the data and hence only data for the last time segment (which is a function of the time) is drawn.

Related Solutions

MATLAB: Does the floating scope operate incorrectly when Simulink 6.1 (R14SP1) is operating in multitasking mode

This has been verified as a bug in Simulink 6.1 (R14SP1) in the way that floating scopes operate in multitasking mode.

Currently, to work around this issue, you can use scope with direct signal connections to its inports. Note that you can still maintain block diagram clarity by utlizing Goto/From blocks which feed a direct scope connection.

MATLAB: Truncating fractions

Ar = round(A*100)/100
.

EDIT

Raviteja, the above command does store your values as you want. The problem is not with the values, but with how the values are displayed in MATLAB. You cannot make MATLAB display the values in just any way you want. The closest you can get is:

format bank
Ar = round(A*100)/100
Ab = abs(A)  %This looks like what you want, but the full value is there.

Best Answer

Related Solutions

MATLAB: Does the floating scope operate incorrectly when Simulink 6.1 (R14SP1) is operating in multitasking mode

MATLAB: Truncating fractions

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