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  • How to know the line joining two points?

    - by dafero
    I have two points and I want to know the line which is joining them. I don't want to draw the line. I want to create a matrix with all the points which formed the line. In the future, I want to solve if two points belong or not to a shape. And this is the first part.

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  • Gedit adds line at end of page

    - by Sam
    The answer to this must be somewhere but I'm not finding it -- can anyone help me understand why in Gedit, if I have a page of code there is no extra trailing blank line, but then when I do a file comparison for my svn commit it shows an extra line being added at the end of the file? I have a feeling that Gedit is automatically adding an ending line break. But why, I have no idea...

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  • plotting stem with a continuous line

    - by Abruzzo Forte e Gentile
    Hi All I need to plot a stem plot of my signal using python and matplotlib. I saw the example and the code but the line connecting the black big dot and the x-axis is not a continous line. Do you know whether is possible and how to get a straight line instead? Thank you very much AFG #!/usr/bin/env python from pylab import * x = linspace(0.1, 2*pi, 10) markerline, stemlines, baseline = stem(x, cos(x), '-.') setp(markerline, 'markerfacecolor', 'b') setp(baseline, 'color','r', 'linewidth', 2) show()

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  • SQL Server stored procedure line number issue

    - by George2
    Hello everyone, I am using SQL Server 2008 Enterprise. I met with issue which says line 9 of stored procedure foo is meeting with dead lock issue. My question is how to find exactly the 9th line of the stored procedure? My confusion is because of coding format issue, how to locate 9th line correctly. thanks in advance, George

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  • Seeking to a line in a file in g++

    - by Phenom
    Is there a way that I can seek to a certain line in a file to read or write data? Let's say I want to write some data starting on the 10th line in a text file. There might be some data already in the first few lines, or the file could even be empty. Is there a way I can seek directly to the line I want without having to worry about what's already in the file?

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  • Create a term-document matrix from files

    - by Joe
    I have a set of files from example001.txt to example100.txt. Each file contains a list of keywords from a superset (the superset is available if we want it). So example001.txt might contain apple banana ... otherfruit I'd like to be able to process these files and produce something akin to a matrix so there is the list of examples* on the top row, the fruit down the side, and a '1' in a column if the fruit is in the file. An example might be... x example1 example2 example3 Apple 1 1 0 Babana 0 1 0 Coconut 0 1 1 Any idea how I might build some sort of command-line magic to put this together? I'm on OSX and happy with perl or python...

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  • Is the console command cd a wildcard of sorts? [closed]

    - by Spiritios
    I was wondering while developing some application (though this is not a development question) if the cd command used in Windows is a wildcard or cross-platform command of sorts. I looked up on table with comands for Unix/Linux and MAC OS X and it turns out that it seems to be there. I am not a multi-os user, so I ask if anyone with experience in different OSes can tell me: If this command really exists and works If it has the same functionality (change directory) If there are any problems with its use If in any OS there is another command-line command that does the same in a better/more elaborate/more frequetly used way. Thanks in advance! (P.S.I am not 100% sure if this question belongs to this site or some other stackexchange site...) (P.P.S Any help in tagging this will be appreciated!)

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  • PHP New Line will not work

    - by user364333
    Hi I am trying to create some code that first reads the existing contents of the file in and then adds the new line of code on a new line but the code i am using just adds it on the new text on to the already existing line instead of the new line... Here is the code i am using: <?php $id = $_GET['id']; $userfile = "user1.txt"; $fo = fopen($userfile, 'r') or die("can't open favourites file"); $currentdata = fread($fo, filesize($userfile)); fclose($fo); $fw = fopen($userfile, 'w') or die("can't open favourites file"); $currentprocessed = "$currentdata\n"; fwrite($fw, $currentprocessed); fwrite($fw, $id); fclose($fw); ?> I have tried a whole range of different ideas but nothing has worked, any help would be appreciated.

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  • Moving a high quality line on a panel c#

    - by user1787601
    I want to draw a line on a panel and then move it as the mouse moves. To do so, I draw the line and when the mouse moves I redraw the line to the new location and remove the previous line by drawing a line with the background color on it. It works fine if I do not use the high quality smoothing mode. But if use high quality smoothing mode, it leave traces on the panel. Does anybody know how to fix this? Thank you. Here is the code int x_previous = 0; int y_previous = 0; private void panel1_MouseMove(object sender, MouseEventArgs e) { Pen pen1 = new System.Drawing.Pen(Color.Black, 3); Pen pen2 = new System.Drawing.Pen(panel1.BackColor, 3); Graphics g = panel1.CreateGraphics(); g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality; g.DrawLine(pen2, new Point(0, 0), new Point(x_previous, y_previous)); g.DrawLine(pen1, new Point(0, 0), new Point(e.Location.X, e.Location.Y)); x_previous = e.Location.X; y_previous = e.Location.Y; } Here is the snapshot with SmoothingMode Here is the snapshot without SmoothingMode

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  • How can I read a comma delimited text file in a Windows batch file?

    - by Sms
    I can get it to read the text file until it becomes a comma delimited text file. I would like to read the two variables on each line and test each one with a If statement for another condition. Problem is I can't read the variables properly. Tried many things but here is what I will post. Timeouts are to see what's happening: for /f "tokens=*" %%a in (TestText.txt) do ( timeout /t 1 echo %%a is the present variabe timeout /t 2 if %%a=="One","1" echo Match for "One","1" timeout /t 3 if %%a=="One""1" echo Match for "One","1" timeout /t 4 if %%a=="One" echo Match for "One" timeout /t 5 if %%a=="1" echo Match for "1" timeout /t 6 ) TestText.txt "One","1" "Two","2" "Three","3" "Four","4" OUTPUT: "One","1" is the present variabe

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  • Increase Volume of an MKV Video from Linux Terminal

    - by The How-To Geek
    I've got a large amount of .MKV video files which seem to all play at a very low volume - I end up having to turn the TV up all the way to hear them, which is really irritating when I switch to another channel and wake the dead because it's so loud. What I'm looking for is a command-line method to increase the volume (so I can run it on all of them quickly) that would hopefully work regardless of the audio codec in use in the particular file. (I don't mind hard-coding the output audio though). For reference, I'm using Ubuntu 9.04 on my server, and the files are being played back with Boxee on a Mac Mini, but the volume problem is the same on Windows too.

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  • How do I open a program via the command prompt in Windows 8?

    - by Ahmadul Hoq
    Suppose I have a program named any_program.exe and my operating system drive is C:. The location of the program is D:\Any_Folder\any_program.exe How do I start/execute that program via command prompt in Windows 8? I have tried the command line START any_program.exe, but it shows me an error that Windows cannot find 'any_program.exe'. Make sure you typed the name correctly, and then try again. By the way, it worked perfectly in Windows 7. And, if I type START notepad.exe or START firefox.exe (Firefox is not installed in C: drive), it works in Windows 8.

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  • div block going to next line in Firefox

    - by user550265
    I have a div with display:block in my css. This div block uses the align = "absmiddle" . It displays all the elements in 1 line in Chrome. However, in firefox, the elements are displyed on to the next line as well. How do I get them to display in 1 single line in firefox. P.S: I have already tried display: inline but it does not bring it in 1 line. <div class="one"><input name="elementone" value="1" align="absmiddle" class="subone" /></div> Css is div.one,div.subone{ display:block; width:16px; height:100%; background-position:0 0px; border:0 }

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  • Increase Volume of an MKV Video from Linux Terminal

    - by The How-To Geek
    I've got a large amount of .MKV video files which seem to all play at a very low volume - I end up having to turn the TV up all the way to hear them, which is really irritating when I switch to another channel and wake the dead because it's so loud. What I'm looking for is a command-line method to increase the volume (so I can run it on all of them quickly) that would hopefully work regardless of the audio codec in use in the particular file. (I don't mind hard-coding the output audio though). For reference, I'm using Ubuntu 9.04 on my server, and the files are being played back with Boxee on a Mac Mini, but the volume problem is the same on Windows too.

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  • running commands as other users - best method

    - by linuxrawkstar
    When running commands as other users from the command line, what is recommended best practice? In the past I've used sudo like so: sudo -u username command [args] I've been told (with no specific reasons why) that using sudo for this purpose is wrong. I'd like to know why. Is there some "best way" to accomplish this? For example, I've also used the su command like so: su username - -c "command [args]" I can't imagine why either of these methods would be "bad". Your thoughts?

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  • cd ~ dumps me in a seemingly empty directory

    - by Davidos
    This is on a Linux mint box. I'm told everywhere to use the command cd ~ To switch to the root directory before doing some command line magic. For some reason though, it dumps me in a directory named ~ where ls gives nothing and I can't get back to my home directory; I have to restart the terminal session to get out of the empty root directory. I'm positive that everything is just hidden to me, but even as a super-user I can't get the folders to show themselves. I usually just fall back to using a graphical file browser to roam those forbidden files, but I've recently just been shut out of my root directory, and the machine refuses to allow me to change the permissions on the stupid thing even when I type the root password in. It may just be some over-rigorous end-user shielding on the part of the mint team, but it's getting to be really frustrating now.

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  • determine if line segment is inside polygon

    - by dato
    suppose we have simple polygon(without holes) with vertices (v0,v1,....vn) my aim is to determine if for given point p(x,y) any line segment connecting this point and any vertices of polygon is inside polygon or even for given two point p(x0,y0) `p(x1,y1)` line segment connecting these two point is inside polygon? i have searched many sites about this ,but i am still confused,generally i think we have to compare coordinates of vertices and by determing coordinates of which point is less or greater to another point's coordinates,we could determine location of any line segment,but i am not sure how correct is this,please help me

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  • Windows command FOR /F isn't working?

    - by Mark Ransom
    I'm trying to use the FOR command in Windows XP's command line. I have a file temp.txt with 3 lines: temp1 temp2 temp3 And I'm typing the following command at the prompt: for /F %p in (temp.txt) do echo Testing %p Nothing comes back. If I remove the /F parameter, the output is Testing temp.txt. As far as I can determine, I'm using the command exactly as it is documented by Microsoft. I've checked my registry to make sure Command Extensions are on, and even started a new shell with cmd /e:on to be doubly sure. What am I doing wrong? Yes, I was doing something wrong. The file temp.txt wasn't created from scratch, I just edited it to put in my test content. Unfortunately when I created the file the first time, I saved it with a UTF-8 marker at the front. Recreating the file as plain text solved the problem.

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  • Setting end-of-line character for puts

    - by Dom De Felice
    I have an array of entries I would like to print. Being arr the array, I used just to write: puts arr Then I needed to use the DOS format end-of-line: \r\n, so I wrote: arr.each { |e| print "#{e}\r\n" } This works correctly, but I would like to know if there is a way to specify what end-of-line format to use so that I could write something like: $eol = "\r\n" puts arr UPDATE I know that puts will use the correct line-endings depending on the platform it is run on, but I need this because I will write the output to a file.

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  • Connect a linux server to network and access it from another computer browser

    - by user1732451
    I had a server in a hosting company and I took it home. I need to connect him to a local network (not wifi) and access to the server from another computer in the network via browser, like I did it when it was in the hosting company. I don't have any knowledge in linux, I just know how to type in the command line :) I thinks all the IP configuration of the server is one big mess, because it passed from more then one hosting company to another... I tried a lot of tutorials that I found in the web, but nothing works - mainly because I don't know how to check if I did something wrong. I just need to know how to connect to local network ( D-Link router) and then access the server from another computer browser. thanks update: the server os is: CentOS release 4.8 (Final)

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  • current line number in Lua

    - by prideout
    Does Lua support something like C's _LINE_ macro, which returns the number of the current code line? I know Lua has a special built-in variable called _G, but I don't see line number in there...

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