Calculate Time Remaining

[Barguast]

This isn't specifically a VB problem, but I'm sure someone here can answer it.

I need to estimate the time remaining for a process. The variables which I want to calculate it with are the completion ratio (0 - 1), and the time that has elapsed since the process began.

From this I should be able to calculate how many more seconds remain, right? Well I don't know the maths of it, so can anyone help me out?

[Muddy]

Originally posted by Barguast
This isn't specifically a VB problem, but I'm sure someone here can answer it.

I need to estimate the time remaining for a process. The variables which I want to calculate it with are the completion ratio (0 - 1), and the time that has elapsed since the process began.

From this I should be able to calculate how many more seconds remain, right? Well I don't know the maths of it, so can anyone help me out?

well the question is sufficiently vague

If you are looping i = 1 to 1000 you could calculate percent complete as i/1000 and use the system time to track seconds/minutes/etc

That what you mean?

[Barguast]

I need it for a file encryptor. Let's say that the encryptor is 80% complete, then the ratio would be 0.8. If this was done in 16 seconds, then you can work out that the encryption will be complete in about 4 seconds.
I just can't seem to work out how the convert the above into an equation.

[Muddy]

Originally posted by Barguast
I need it for a file encryptor. Let's say that the encryptor is 80% complete, then the ratio would be 0.8. If this was done in 16 seconds, then you can work out that the encryption will be complete in about 4 seconds.
I just can't seem to work out how the convert the above into an equation.

(Now - StartTime) / PercentComplete

Thats the psuedo code anyway ... If you are using VB6 youd use DateDiff with Now and StartTime as arguments ...

[Barguast]

A-ha, that calculates the total time the process will take. I can work from that, thanks