def minutes(self):
from decimal import Decimal, ROUND_UP
import os
import math
scale = unicode(self.comboBox7.currentText())
job = os.path.expanduser("~/hpgl-hot-folder/temp.plot")
thestat = os.stat(job)
size = thestat[6]
known = 1000
factor = self.LCDNumber5.value()
if scale==(self.__tr("3.53")):
cut = size / known * 40 / 272
self.LCDNumber17.display(round(cut, 2))
else:
cut = size / known * 6 / 257
self.LCDNumber17.display(round(cut, 2))


In the above all is working great except I'd like to have the "factor" variable adjust the LCDNumber17 display slightly. The slider values range from 1-60 units.I've done some tests and with slider on 30 it takes 40min. with the slider on 5 it takes 46min. I need to find a relationship for the slider valve and as the slider value increases the time (LCDNumber17) goes down correspondingly and put it at the end of the "cut" calculation.

any ideas?

Thanks

Ouch, python post without indentatiton. Any chance you can repost or edit it so that the code is inside "code tags"?

Evo2.

I didn't notice till it was to late I hope the code tags I inserted work?


def minutes(self):
from decimal import Decimal, ROUND_UP
import os
import math
scale = unicode(self.comboBox7.currentText())
job = os.path.expanduser("~/hpgl-hot-folder/temp.plot")
thestat = os.stat(job)
size = thestat[6]
known = 1000
factor = self.LCDNumber5.value()
if scale==(self.__tr("3.53")):
cut = size / known * 40 / 272
self.LCDNumber17.display(round(cut, 2))
else:
cut = size / known * 6 / 257
self.LCDNumber17.display(round(cut, 2))

I inserted a code tag at the start and the end of the code but no change....

Sorry I don't understand you code. However, I think I understand that you want to define a function that relates "slider" (what ever that is) to time.

y=m*x + c

m = (46-40)/(5-30) = -6/25 = -0.24
c = 46-m*5 = 47.2

so
y = -0.24*x + 47.2
or
s = -0.24*t + 47.2

or in python
Is this what you are looking for?

Evo2.

Is there a way to incorporate your calculations into the def I posted as perhaps another variable then applied to the "factor" variable?

cut = size / known * 40 / 272 * factor (after your calculations on the factor variable) or something like that if it even can be that simple?

The main problem here is that I don't understand your code. You've posted one method from a class with a bunch of member objects and functions which are defined somewhere else. If you can cut your code down to something that can be understood on it's own I might be able to help.

Evo2.

Sorry I'll explain:

All the calculations that are in the code post work very accurately but the slider value (variable "factor") with units 1-60 influence the time(derived from the "cut" variable) value specified by LCDNumber17 greatly. I did some actual time tests and with a known file size (size variable) with the slider value at 30 it took 40 minutes and the same file at slider value at 5 it took 46 minutes. I was hoping to establish a ratio based on slider units that could be added or multiplied to the
"cut = size / known * 40 / 272" calculation?

File size will vary always
I'm not sure if I'm going the right way to accomplish this or not?

Got it done with a bunch of elif statements, not very efficient but it works.

Thanks for your help
gary