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问题 I have a spectral plot with 2 straight lines, which I made with the following commands: (a is the slope from the left part of the spectrum, b the right. the boundary is 3200 Hz here) a=0.009909 b=-0.003873 plot(spec, type="l", main...) abline(a, col="orange") abline(b, col="skyblue") abline(v=3200, lty=2) What I would like to do is to draw the orange line until 3200 Hz and the skyblue line from 3200 Hz like the following plot (roughly created by photoshop, sorry): Is that with the function

问题 How can I write a program using JES to draw “White” gridlines on an image where the horizontal gridlines are separated by 10 pixels and the vertical gridlines are separated by 20 pixels? 回答1: Yes, surprisingly, addLine(picture, startX, startY, endX, endY) can only draw black lines !? So let's do it by hand. Here is a very basic implementation: def drawGrid(picture, color): w = getWidth(picture) h = getHeight(picture) printNow(str(w) + " x " + str(h)) w_offset = 20 # Vertical lines offset h

问题 I just finished converting a Subversion repository to git using git svn clone--stdlayout --authors-file=ourcommitters.txt svn://svn.internalserver.com While doing so, I had the git flag 'core.autocrlf' set to 'true' - just in case that matters. After a long time, the command finished. I cleaned the resulting git repository a bit (deleting unneded branches, creating tags etc.) and now everything looks really nice and works well. The repository is hosted on a Linux box, and cloning that onto

问题 I'm using vb.net windows form app. I want to remove line from list of lines. So if the line in textbox exists on that list, to be remove from list, and file to be saved. I have a file list.txt with list of numbers : 123-123 321-231 312-132 If I write in textbox : 321-231 and if list.txt contains that line then remove it. so result need to be : 123-123 321-132 I was trying with this code : Dim lines() As String Dim outputlines As New List(Of String) Dim searchString As String = Textbox1.Text

问题 I'm making a program that displays random lines from a file but I'm a bit new to arraylists. I want to remove the most previous random line from the arraylist after it's displayed but not from the file. This is because I don't want it to be repeated. Here's my code: try { Random random = new Random(); int randomInt = random.nextInt(50); FileReader fr = new FileReader(file); BufferedReader reader = new BufferedReader(new FileReader(file)); String line = reader.readLine(); if (line.contains("!"

问题 i am just a beginer in c++ so please do not judge me hard. Probably this is silly question but i want to know. i have a text file like this(there always will be 4 numbers, but the count of rows will vary): 5 7 11 13 11 11 23 18 12 13 36 27 14 15 35 38 22 14 40 25 23 11 56 50 22 20 22 30 16 18 33 30 18 19 22 30 And here is what i want to do: i want to read this file line by line and put each number into variable. Then i will do some functions with this 4 numbers and then i want to read the

问题 My question is pretty standard but can't find a solution of that. I have points=[x,y,z] and want to plot best fit line. I am using function given below (and Thanx Smith) % LS3DLINE.M Least-squares line in 3 dimensions. % % Version 1.0 % Last amended I M Smith 27 May 2002. % Created I M Smith 08 Mar 2002 % --------------------------------------------------------------------- % Input % X Array [x y z] where x = vector of x-coordinates, % y = vector of y-coordinates and z = vector of % z

问题 How would you do the following in perl: for $line (@lines) { if ($line =~ m/ImportantLineNotToBeChanged/){ #break out of the for loop, move onto the next line of the file being processed #start the loop again } if ($line =~ s/SUMMER/WINTER/g){ print "."; } } Updated to show more code, this is what I'm trying to do: sub ChangeSeason(){ if (-f and /.log?/) { $file = $_; open FILE, $file; @lines = <FILE>; close FILE; for $line (@lines) { if ($line =~ m/'?Don't touch this line'?/) { last; } if (

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 11 months ago . I want to have a svg dashed line drawn on scroll and got stuck on this for 4hrs. If it's just a straight line, I can easily animate it by setting stroke-dasharray on css animation, but it doesn't work on a dashed line. Since there's a background image on body, I cannot use a mask trick either. I just want to

问题 How do I load a certain line from a text document (for example line 546) into a website? 回答1: Do it with PHP. Use the fopen() , fread() and fclose() methods. To get a specific line of txt is relative, because the formatting of .txt Start with w3schools and PHP manual. The best way to figured it out is to try and documentations. In my case it was helpful all the way. 回答2: I propose this solution using old technology because you asked to make this work for an old file format (html)! So here it