Extremely small variation of a variable

[balala]

Hi there,

Again my turn to ask for help.
I have two variables, specifically geographical coordinates (latitude and longitude). I want to vary them by the sixth decimal. This means that if for instance the value of Latitude is 45.125601 (obviously just an example), its next value should be 25.125602. However it seems I can't do this: the smallest possible variation of a variable seems to by 0.00001 (so can vary the fifth decimal). Does anyone know a way to get varying the sixth decimal?
Example (extremely simplified) code:

Code: Select all

[Variables]
Latitude=45.125601
Variation=0.00001

[MeterVariation]
Meter=STRING
X=0
Y=0
Padding=15,5,15,5
FontColor=220,220,220
FontEffectColor=0,0,0
StringEffect=Shadow
SolidColor=0,0,0,150
FontSize=8
FontFace=Segoe UI
StringStyle=BOLD
StringAlign=LEFT
AntiAlias=1
Text=Latitude:#CRLF##Latitude#
DynamicVariables=1
MouseScrollDownAction=[!SetVariable Latitude "(#Latitude#-#Variation#)"][!UpdateMeter "MeterVariation"][!Redraw]
MouseScrollUpAction=[!SetVariable Latitude "(#Latitude#+#Variation#)"][!UpdateMeter "MeterVariation"][!Redraw]

The skin based on this code perfectly works. However if i modify the Variation variable to Variation=0.000001, the scroll doesn't work anymore. Is there a way to get a smallest variation of the variable than 0.00001?

Thanks in advance for any idea.

[Brian]

This is caused by how the SetVariable bang converts text to a formula. For this bang, Rainmeter uses a decimal precision of 5 decimal points to do the conversion.
https://github.com/rainmeter/rainmeter/blob/master/Library/Skin.cpp#L1682

So, given the limitation of this bang, I would recommend just using a regular Calc measure, which has greater precision.

Here is one way to solve your issue:

Code: Select all

[Variables]
Latitude=45.125602
Variation=0.000001

[MeasureLatitude]
Measure=Calc
Formula=#Latitude#
DynamicVariables=1

[MeterVariation]
Meter=STRING
MeasureName=MeasureLatitude
X=0
Y=0
Padding=15,5,15,5
FontColor=220,220,220
FontEffectColor=0,0,0
StringEffect=Shadow
SolidColor=0,0,0,150
FontSize=8
FontFace=Segoe UI
StringStyle=BOLD
StringAlign=LEFT
AntiAlias=1
Text=Latitude:#CRLF#%1
NumOfDecimals=6
MouseScrollDownAction=[!UnPauseMeasure MeasureLatitude][!SetOption MeasureLatitude Formula "MeasureLatitude-#Variation#"][!UpdateMeasure "MeasureLatitude"][!PauseMeasure MeasureLatitude][!UpdateMeter "MeterVariation"][!Redraw]
MouseScrollUpAction=[!UnPauseMeasure MeasureLatitude][!SetOption MeasureLatitude Formula "MeasureLatitude+#Variation#"][!UpdateMeasure "MeasureLatitude"][!PauseMeasure MeasureLatitude][!UpdateMeter "MeterVariation"][!Redraw]

Please note the changes I made - especially the pausing/unpausing of the measure since we don't want the number to change continuously.

There is probably better ways to "control" the formula than my method, but hopefully this helps to solve your issue.

-Brian

[tass_co]

Hi there,

Again my turn to ask for help.
I have two variables, specifically geographical coordinates (latitude and longitude). I want to vary them by the sixth decimal. This means that if for instance the value of Latitude is 45.125601 (obviously just an example), its next value should be 25.125602. However it seems I can't do this: the smallest possible variation of a variable seems to by 0.00001 (so can vary the fifth decimal). Does anyone know a way to get varying the sixth decimal?
Example (extremely simplified) code:

Code: Select all

[Variables]
Latitude=45.125601
Variation=0.00001

[MeterVariation]
Meter=STRING
X=0
Y=0
Padding=15,5,15,5
FontColor=220,220,220
FontEffectColor=0,0,0
StringEffect=Shadow
SolidColor=0,0,0,150
FontSize=8
FontFace=Segoe UI
StringStyle=BOLD
StringAlign=LEFT
AntiAlias=1
Text=Latitude:#CRLF##Latitude#
DynamicVariables=1
MouseScrollDownAction=[!SetVariable Latitude "(#Latitude#-#Variation#)"][!UpdateMeter "MeterVariation"][!Redraw]
MouseScrollUpAction=[!SetVariable Latitude "(#Latitude#+#Variation#)"][!UpdateMeter "MeterVariation"][!Redraw]

The skin based on this code perfectly works. However if i modify the Variation variable to Variation=0.000001, the scroll doesn't work anymore. Is there a way to get a smallest variation of the variable than 0.00001?

Thanks in advance for any idea.

hi balala

I tried to do something for you. I hope it does its job. Respects

Code: Select all

[Rainmeter]
Update=300

[Variables]
Latitude=45.125601
Lat1=45
Lat2=125601

[MeterVariation]
Meter=STRING
X=0
Y=0
Padding=15,5,15,5
FontColor=220,220,220
FontEffectColor=0,0,0
StringEffect=Shadow
SolidColor=0,0,0,150
FontSize=8
FontFace=Segoe UI
StringStyle=BOLD
StringAlign=LEFT
AntiAlias=1
Text=Latitude:#CRLF##Latitude#
DynamicVariables=1
MouseScrollDownAction=[!SetVariable Lat2 "((#Lat2#) - 1)"][!SetVariable Latitude "#Lat1#.#Lat2#"][!UpdateMeter "MeterVariation"][!Redraw]
MouseScrollUpAction=[!SetVariable Lat2 "((#Lat2#) + 1)"][!SetVariable Latitude "#Lat1#.#Lat2#"][!UpdateMeter "MeterVariation"][!Redraw]

UPDATE: I didn't see Brian's post. I'm sorry for that

[balala]

This is caused by how the SetVariable bang converts text to a formula. For this bang, Rainmeter uses a decimal precision of 5 decimal points to do the conversion.
https://github.com/rainmeter/rainmeter/blob/master/Library/Skin.cpp#L1682

So, given the limitation of this bang, I would recommend just using a regular Calc measure, which has greater precision.

Thank you Brian. This explanation makes sense. And yep, that Calculate measure does the job. Now the variable varies as expected.

There is probably better ways to "control" the formula than my method, but hopefully this helps to solve your issue.

I'll alter a lot of related things, but the problem was how to get that small variation. As said, your method does the trick, as expected.

Thank you again.

[balala]

I tried to do something for you. I hope it does its job. Respects

Yep, your method works as well. Very good idea, thank you, even if I'd refine it a little bit. But the basic idea is good.

UPDATE: I didn't see Brian's post. I'm sorry for that

Don't be sorry. I thank for every help and idea I get.

[Brian]

I tried to do something for you. I hope it does its job. Respects

Code: Select all

[Rainmeter]
Update=300

[Variables]
Latitude=45.125601
Lat1=45
Lat2=125601

[MeterVariation]
Meter=STRING
X=0
Y=0
Padding=15,5,15,5
FontColor=220,220,220
FontEffectColor=0,0,0
StringEffect=Shadow
SolidColor=0,0,0,150
FontSize=8
FontFace=Segoe UI
StringStyle=BOLD
StringAlign=LEFT
AntiAlias=1
Text=Latitude:#CRLF##Latitude#
DynamicVariables=1
MouseScrollDownAction=[!SetVariable Lat2 "((#Lat2#) - 1)"][!SetVariable Latitude "#Lat1#.#Lat2#"][!UpdateMeter "MeterVariation"][!Redraw]
MouseScrollUpAction=[!SetVariable Lat2 "((#Lat2#) + 1)"][!SetVariable Latitude "#Lat1#.#Lat2#"][!UpdateMeter "MeterVariation"][!Redraw]

UPDATE: I didn't see Brian's post. I'm sorry for that

Very clever!

Thank you again.

You're welcome!

-Brian