This will be cross posted on R’s mailing list. I have the map as a png, so I won’t be using the get_map function. I have extracted the raster data from the png, and I wish to load the map as it is on the display of R, and then I would like to plot a point on it. So,
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i am trying to convert images from .jpg to .tiff using ghost script.And i have executed following command to do that. But i am getting this errors. What is the problem with my command? Any suggestion and guidance will be appreciated.I have to convert my images using ghost script because if i am using the imag…
supervisor for an executable in linux [closed]
Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 3 years ago. Improve this question I am currently developing an executable which runs on linux. I want to hav…
ruby Array.inspect vs. Array[element].to_s
I’m working with an array, which we’ll call books, of complex objects, which we’ll call Book. The problem is when I call puts “#{books.inspect}”, ruby outputs a stream of binary (unreadable utf8 characters). However, when I call puts #{books[0].to_str}”, I get a brief, pret…
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If I run a regular git command such as git checkout I get helpful autocompletion of branch names when hitting the tab key. I have a few git aliases which take branch names as parameters, and I’m wondering if there’s a way of getting the branch name autocompletion to work with them? Edit: Just to p…
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I encountered my first Segmentation Fault today (newbie programmer). After reading up on what a segmentation fault is (Thanks for all of the helpful info on this site, as well as Wikipedia’s lengthy explanation), I’m trying to determine the easiest way to go about finding where my fault is occurin…
Does struct hostent have a field “h_addr”?
I encountered the following code snapshot: I am rather confused by the last statement, the declaration of struct hostent is like this: It doesn’t have a field named “h_addr”, but the code did can compile, can anyone tell me why? thanks. Answer You missed this bit right under it: So no, there…
Editing the sudoers file on Mac or Linux when you have no permissions
I’m trying to install something on my MacOS (or Linux) system and I don’t have permission because I’m not the admin. So I tried using sudo and it says that I’m not in /etc/sudoers file. I’ve tried editing the sudoers file but it won’t let me, so I “googled” it. …
Why is the close function is called release in `struct file_operations` in the Linux kernel?
I’m trying to make a linux kernel module, which supports open, close, read and write operations. So I want to register these functions via struct file_operations, however I can’t find ‘close’ entry in the struct. I think I should use ‘release’ instead of ‘close’…
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I am using Octave version 3.4.3, and I get this warning: I know why this warning occurs, I just want to make the warning not appear on screen when run. I know I can suppress ALL warnings by putting this command at the top of my octave program: Docs: https://octave.sourceforge.io/octave/function/warning.html B…