roll

How to roll the log file on startup in logback

Hi all, I would like to configure logback to do the following. Log to a file Roll the file when it reaches 50MB Only keep 7 days worth of logs On startup always generate a new file (do a roll) I have it all working except for the last item, startup roll. Does anyone know how to achieve that? Here's the config... <appender name=...

python numpy roll with padding

I'd like to roll a 2D numpy in python, except that I'd like pad the ends with zeros rather than roll the data as if its periodic. Specifically, the following code import numpy as np x = np.array([[1, 2, 3],[4, 5, 6]]) np.roll(x,1,axis=1) returns array([[3, 1, 2],[6, 4, 5]]) but what I would prefer is array([[0, 1, 2], [0, 4, 5]...

Bank angle from up vector and look at vector?

Hi all. I can't figure out the formula to compute the bank (roll) angle from the up and lookat vectors, though I feel this angle must be measured in tha plan normal to the lookat vector. Any hint appreciated. FYI I use WPF. I have posted another question here, which is the same problem, but expressed only using math. ...

Developing apps for camera roll access

Is anyone developing anything with this? I'm concerned if I use images/videos from the camera roll without saving to the bundle that if the user messes with their image library all the album creation and fancy indexing (as a generic example) of the images will end up with missing media from said albums etc. Is it practical to save to ...

IPhone - Camera roll in app

Do you know some way to show the camera roll in my app with navigation bar, backward, forward, delete controls?? Thankz :D ...

Determining roll angle (up/down) when Android phone is horizontal?

When the Android phone is on its side (horizontal orientation), the Roll represents the tilt, so to speak. When the phone is perpendicular to the ground (looking directly at the screen), the roll says 90. However, when you start tilting it forward or backward, as if you wanted to look down or up, the angle just decreases either way. ...