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Re: Tick Values on Gauges
Posted:
Oct 3, 2013 10:10 PM


Thanks Alexei, that gave me enough of a lead. This can easily be done with Presentations by turning the ScaleDivisions off and using an XTickLine in an Epilog option. The gauge is actually a Graphics expression inside a DynamicModule. So the following achieved the desired ticks on the gauge:
<< Presentations`
HorizontalGauge[Dynamic[t], {16, 16},
ScaleDivisions > None,
Epilog > {XTickLine[{0, 1, 0}, {16, 16}, {16, 16, 4}, 4,
XLabTickSpecs > {0.05, 0.0},
XUnLabTickSpecs > {0.025, 0.0}]},
ImageSize > 300,
Frame > False]
The Frame can be set to True while designing the gauge ticks. Of course, this only works for straight line gauges.
Here is an example with the ThermometerGauge where we can put the tick lines across the thermometer tube.
DynamicModule[{t = 0},
{ThermometerGauge[Dynamic[t], {16, 16},
ScaleDivisions > None,
Epilog > {YTickLine[{0, 1, 0.0}, {16, 16}, {16, 16, 4}, 4,
YLabTickSpecs > {0.18, 0.0},
YUnLabTickSpecs > {0.1, 0.0}]},
ImageSize > 60,
Frame > False], Dynamic[t]}]
The only problem is that this exposes a flaw with ThermometerGauge. Whenever the first argument is a Dynamic[variable] the upper portion of the thermometer is not drawn! And on the ThermometerGauge Function page there is not a single example of using a Dynamic variable! Of course, we all know that thermometers can't be used as input devices so maybe it's not that bad.
David Park
<mailto:djmpark@comcast.net> djmpark@comcast.net
<http://home.comcast.net/~djmpark/index.html> http://home.comcast.net/~djmpark/index.html
From: Alexei Boulbitch [mailto:Alexei.Boulbitch@iee.lu]
Does anyone know how to specify custom tick values on gauges? I would like to have an output gauge that has a range of 16 to 16 in steps of 4. The following, however, insists on using spacings of 5. VerticalGauge[fval, {16, 16}, ScaleDivisions > {8, 1}] This seems to be another unnecessary design restriction imposed by WRI. There is a Ticks option but it does not work. David Park djmpark at comcast.net http://home.comcast.net/~djmpark/index.html <http://home.comcast.net/%7Edjmpark/index.html>
Dear David,
I asked recently a very close question at the StackExchange:
http://mathematica.stackexchange.com/questions/28348/howtofixticksingau ges
As much as you can see from the answers to my question, there is no satisfactory solution. In any nonstandard case one has to build a considerable part of the gauge himself. This we can do, however, also without the WRI gauge template.
Best, Alexei
Alexei BOULBITCH, Dr., habil.
IEE S.A.
ZAE Weiergewan,
11, rue Edmond Reuter,
L5326 Contern, LUXEMBOURG
Office phone : +35224542566
Office fax: +35224543566
mobile phone: +49 151 52 40 66 44
email: alexei.boulbitch@iee.lu



