#193 Taurustrend DataInspector data format

[Marc Alvarez]

Hi,

We would need the DataInspector tool from taurustrend either:

• to use the data format of the Tango DB or
• to have the possibility to configure it from taurustrend application

The problem appears when trying to plot the RF Frequency of the Accelerators, which have 9 significant numbers (499.654.125 Hz) and it is configured at Tango DB as %16.4f. When we plot it with taurustrend it is not possible for us to know the frequency value using data inspector because it only shows the first 5 most significant numbers (4.9965e08).

This feature is necessary for us, specially when we have to retrieve the frequency value after som machine failures.

Thanks in advance,
Marc

[Carlos Pascual]

Just to facilitate the patch (cannot do it myself now), here are a few notes:

The necessary changes should be done on the following lines of TaurusPlot.pickDataPoint()

            if self.getXIsTime():
                infotxt = "'%s'[%i]:\n\t (t=%s, y=%.5g)"%(pickedCurveTitle,pickedIndex,datetime.fromtimestamp(picked.x()).ctime(),picked.y())
            else:
                infotxt = "'%s'[%i]:\n\t (x=%.5g, y=%.5g)"%(pickedCurveTitle,pickedIndex,picked.x(),picked.y())

The formats for x and y can be obtained from the corresponding TaurusAttributes referenced by the picked curve (we already know its name in this scope).

Note 1: A quick -and-dirty workaround would be to change the hardcoded format strings "%.5g" by whatever other format you need

Note 2: TEP14 may introduce some changes here since the format will be available in a scheme-agnostic way from the "default_format" attribute of the rvalue