logo
down
shadow

Finding a line in an image file


Finding a line in an image file

Content Index :

Finding a line in an image file
Tag : image , By : wraith
Date : November 28 2020, 08:01 AM


Comments
No Comments Right Now !

Boards Message :
You Must Login Or Sign Up to Add Your Comments .

Share : facebook icon twitter icon

shell script(AIX) : finding a string after the matched pattern line by line in a file


Tag : linux , By : negonicrac
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further I have a log file in AIX environment which has lines like below
awk -F"&" '{for(i=1;i<=NF;i++)if($i~/country/ ||$i~/language/){split($i,a,"=");printf a[2]" "}}' your_file
sed -e 's/.*country=//g;s/language=\([^\&]*\)&.*/\1/g' your_file
> sed -e 's/.*country=//g;s/&language=\([^\&]*\)&.*/ \1/g' temp
us en

C++ Finding a line from a text file and updating/writing the line


Tag : cpp , By : Picoman Games
Date : March 29 2020, 07:55 AM
I wish did fix the issue. If your file is very small like you've mentioned, you may bring it into an array of strings (one element per line of text). Then make changes to the array and re-write the whole array back to the file.
For example, you can read it into an arrya like this:
//assuming you've defined the array A
for(int i = 0; i < 6; i++)    //NOTE: I've changed the loop counter i
      {
         getline(file, line);
         A[i] = line;
         cout << A[i] < "\n"; //This is the NEW LINE I wanted you to put
         //If the ABOVE line gives nothing, you ought to check your TXT file.
      }
//Change line 6
A[5] = "555.00";
//Now reopen the file to write
ofstream Account ("accounts.txt");
if (Account.is_open())
  {
    for(i=0;i<6;i++)
       {//NOTE THAT I HAVE INCLUDED BRACES HERE in case you're missing something.
        Account << A[i] << "\n"; //Loop through the array and write to file
       }
    Account.close();
  }
for(int i = 0; i < 6; i++)
   {
    cout << A[i] < " This is a row with data\n";
   }

Finding occurrences of specific word line by line from text file


Tag : c , By : Verbal
Date : March 29 2020, 07:55 AM
I hope this helps you . Maybe you need to write a strword() function like this. I'm assuming you can use the classification functions (macros) from , but there are workarounds if that isn't allowed either.
#include <assert.h>
#include <ctype.h>
#include <stdio.h>

char *strword(char *haystack, char *needle);

char *strword(char *haystack, char *needle)
{
    char *pos = haystack;
    char old_ch = ' ';
    while (*pos != '\0')
    {
        if (!isalpha(old_ch) && *pos == *needle)
        {
            char *txt = pos + 1;
            char *str = needle + 1;
            while (*txt == *str)
            {
                if (*str == '\0')
                    return pos;     // Exact match at end of haystack
                txt++, str++;
            }
            if (*str == '\0' && !isalpha(*txt))
                return pos;
        }
        old_ch = *pos++;
    }
    return 0;
}

int main(void)
{
    /*
    ** Note that 'the' appears in the haystack as a prefix to a word,
    ** wholly contained in a word, and at the end of a word - and is not
    ** counted in any of those places. And punctuation is OK.
    */
    char haystack[] =
        "the way to blithely count the occurrences (tithe)"
        " of 'the' in their line is the";
    char needle[] = "the";

    char *curpos = haystack;
    char *word;
    int count = 0;
    while ((word = strword(curpos, needle)) != 0)
    {
        count++;
        printf("Found <%s> at [%.20s]\n", needle, word);
        curpos = word + 1;
    }

    printf("Found %d occurrences of <%s> in [%s]\n", count, needle, haystack);

    assert(strword("the", "the") != 0);
    assert(strword("th", "the") == 0);
    assert(strword("t", "t") != 0);
    assert(strword("", "t") == 0);
    assert(strword("if t fi", "t") != 0);
    assert(strword("if t fi", "") == 0);
    return 0;
}
Found <the> at [the way to blithely ]
Found <the> at [the occurrences (tit]
Found <the> at [the' in their line i]
Found <the> at [the]
Found 4 occurrences of <the> in [the way to blithely count the occurrences (tithe) of 'the' in their line is the]
static inline int is_alpha(int c)
{
    return (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z');
}

How to send a request to upload image file to LINE server with multipart/form-data for posting image to LINE Notify?


Tag : vb.net , By : user161314
Date : March 29 2020, 07:55 AM
I hope this helps . POST multipart/form-data for line notify , need generate output byte array list by yourself LINE Notify API Reference https://notify-bot.line.me/doc/en/
Upload File Class
public class FormFile
{
    public string Name { get; set; }

    public string ContentType { get; set; }

    public string FilePath { get; set; }

    public byte[] bytes { get; set; }
}
private void multipartTest(string access_token)
{
    Dictionary<string, object> d = new Dictionary<string, object>()
    {
        // message , imageFile ... name is provided by LINE API
        { "message", @"message..." },
        { "imageFile", new FormFile(){ Name = "notify.jpg", ContentType = "image/jpeg", FilePath="notify.jpg" }
        }
    };

    string boundary = "Boundary";
    List<byte[]> output = genMultPart(d, boundary);
    lineNotifyMultipart(access_token, boundary, output);
}
private void lineNotifyMultipart(string access_token, string boundary, List<byte[]> output)
{
    try
    {
        #region POST multipart/form-data
        StringBuilder sb = new StringBuilder();
        HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(lineNotifyURL);
        request.Method = "POST";
        request.ContentType = "multipart/form-data; boundary=Boundary";
        request.Timeout = 30000;

        // header
        sb.Clear();
        sb.Append("Bearer ");
        sb.Append(access_token);
        request.Headers.Add("Authorization", sb.ToString());
        // note: multipart/form-data boundary must exist in headers ContentType
        sb.Clear();
        sb.Append("multipart/form-data; boundary=");
        sb.Append(boundary);
        request.ContentType = sb.ToString();

        // write Post Body Message
        BinaryWriter bw = new BinaryWriter(request.GetRequestStream());
        foreach(byte[] bytes in output)
            bw.Write(bytes);

        #endregion

        getResponse(request);
    }
    catch (Exception ex)
    {
        #region Exception
        StringBuilder sbEx = new StringBuilder();
        sbEx.Append(ex.GetType());
        sbEx.AppendLine();
        sbEx.AppendLine(ex.Message);
        sbEx.AppendLine(ex.StackTrace);
        if (ex.InnerException != null)
            sbEx.AppendLine(ex.InnerException.Message);
        myException ex2 = new myException(sbEx.ToString());
        //message(ex2.Message);
        #endregion
    }
}

private void getResponse(HttpWebRequest request)
{
    StringBuilder sb = new StringBuilder();
    string result = string.Empty;
    StreamReader sr = null;
    try
    {
        #region Get Response
        if (request == null)
            return;
        // HttpWebRequest GetResponse() if error happened will trigger WebException
        using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
        {
            sb.AppendLine();
            foreach (var x in response.Headers)
            {
                sb.Append(x);
                sb.Append(" : ");
                sb.Append(response.Headers[x.ToString()]);
                if (x.ToString() == "X-RateLimit-Reset")
                {
                    sb.Append(" ( ");
                    sb.Append(CheckFormat.ToEpcohDateTimeUTC(long.Parse(response.Headers[x.ToString()])));
                    sb.Append(" )");
                }
                sb.AppendLine();
            }
            using (sr = new StreamReader(response.GetResponseStream()))
            {
                result = sr.ReadToEnd();
                sb.Append(result);
            }
        }

        //message(sb.ToString());

        #endregion
    }
    catch (WebException ex)
    {
        #region WebException handle
        // WebException Response
        using (HttpWebResponse response = (HttpWebResponse)ex.Response)
        {
            sb.AppendLine("Error");
            foreach (var x in response.Headers)
            {
                sb.Append(x);
                sb.Append(" : ");
                sb.Append(response.Headers[x.ToString()]);                    
                sb.AppendLine();
            }
            using (sr = new StreamReader(response.GetResponseStream()))
            {
                result = sr.ReadToEnd();
                sb.Append(result);
            }

            //message(sb.ToString());
        }

        #endregion
    }
}

public List<byte[]> genMultPart(Dictionary<string, object> parameters, string boundary)
{
    StringBuilder sb = new StringBuilder();
    sb.Clear();
    sb.Append("\r\n--");
    sb.Append(boundary);
    sb.Append("\r\n");
    string beginBoundary = sb.ToString();
    sb.Clear();
    sb.Append("\r\n--");
    sb.Append(boundary);
    sb.Append("--\r\n");
    string endBoundary = sb.ToString();
    sb.Clear();
    sb.Append("Content-Type: multipart/form-data; boundary=");
    sb.Append(boundary);
    sb.Append("\r\n");
    List<byte[]> byteList = new List<byte[]>();
    byteList.Add(System.Text.Encoding.UTF8.GetBytes(sb.ToString()));

    foreach (KeyValuePair<string, object> pair in parameters)
    {
        if (pair.Value is FormFile)
        {
            byteList.Add(System.Text.Encoding.ASCII.GetBytes(beginBoundary));
            FormFile form = pair.Value as FormFile;

            sb.Clear();
            sb.Append("Content-Disposition: form-data; name=\"");
            sb.Append(pair.Key);
            sb.Append("\"; filename=\"");
            sb.Append(form.Name);
            sb.Append("\"\r\nContent-Type: ");
            sb.Append(form.ContentType);
            sb.Append("\r\n\r\n");
            byte[] bytes = System.Text.Encoding.UTF8.GetBytes(sb.ToString());
            byteList.Add(bytes);
            if (form.bytes == null && !string.IsNullOrEmpty(form.FilePath))
            {    
                FileStream fs = new FileStream(form.FilePath, FileMode.Open, FileAccess.Read);
                MemoryStream ms = new MemoryStream();
                fs.CopyTo(ms);
                byteList.Add(ms.ToArray());
            }
            else
                byteList.Add(form.bytes);
        }
        else
        {
            byteList.Add(System.Text.Encoding.ASCII.GetBytes(beginBoundary));
            sb.Clear();
            sb.Append("Content-Disposition: form-data; name=\"");
            sb.Append(pair.Key);
            sb.Append("\"");
            sb.Append("\r\n\r\n");
            sb.Append(pair.Value);
            string data = sb.ToString();
            byte[] bytes = System.Text.Encoding.UTF8.GetBytes(data);
            byteList.Add(bytes);
        }
    }

    byteList.Add(System.Text.Encoding.ASCII.GetBytes(endBoundary));
    return byteList;
}    

Sorting text file into lists of every new line, finding the biggest value and printing the number of the line in which i


Tag : python , By : KT.
Date : March 29 2020, 07:55 AM
I wish did fix the issue. This is my first time asking for help here, but surely not last since I'm just a struggling beginner. , Processing line by line:
with open('data.txt', 'r') as file: 
  imax, max_line = float('-inf'), -1    # init of overall max and line number
  for line_no, line in enumerate(file):
    # Use try/except to ignore problem lines (such as blank line)
    try:
      line_max = max(map(int, line.rstrip().split()))  # max in line
                     # Line above does the following:
                     # line.strip() remove "/n" at end of line
                     # .split() convert string into list of numbers
                     # (e.g. "1 2 3".split() -> ['1', '2', '3']
                     # map(int, lst) converts list of strings into numbers
                     # (i.e. ['1', '2', '3'] -> [1, 2, 3]
                     # max takes the max of the numbers in the list
      if line_max > imax:
        imax, max_line = line_max, line_no        # update overall max
    except:
      continue                     # ignores problems (such as blank lines)

print(f'Max {imax} on line {max_line}')  
5 26 83 1 5645
7 3758 69 4 84

17 8 19 21 15
232 231 99999 15
Max 99999 on line 4
Related Posts Related QUESTIONS :
  • Is it possible to Drag-and-Drop images between Web sites (applications)?
  • how to add image to each category in wordpress?
  • Access 2013 msoFileDialogSaveAs Not Saving Image
  • how to make smooth and remove the white edge? Besides, why the black lines arise in my answer? How to solve it?
  • Using PNG images in web sites
  • why does ImageMagick crop this SVG image ... rendering of U+1F382 glyph
  • Google Drive encrypt image with Apps Script? (cCryptoGS)
  • How to detect if the jpg jpeg image file is corrupted(incomplete)?
  • Joomla! lightbox and Joomla! gallery
  • Is it possible to make a grayscale BMP file?
  • Calculating pixel length of an image
  • Vue dynamic image path (picture not shown)
  • color match in images
  • How to convert a image to UIImage
  • SwiftUI fullscreen image background
  • ImageMagick to compare 2 images, marked with 2 different color on the output image
  • Xamarin Extract Images from pdf file
  • Slight differences in pixel values between OpenCV and Matlab
  • How to use a matrix with a circle as a mask?
  • The right way to do sprite-based animation in Svelte
  • How to use parallax effect with CachedNetworkImage in Flutter?
  • How do I create the following illustration in LaTeX?
  • Segmentation of hand drawn logic gates in image
  • How to add webp supports in safari browser
  • Upload a picture to generate a video with special effects
  • How to change colors of an image using RGBA and more channels independently of their color
  • Matlab - Creating a figure of different sized subplots
  • SwiftUI pin Image to top right of screen and resize based on device size
  • Add Image to TextField/SecureField in SwiftUI, add padding to placeholder text
  • How to compare whether two images are almost identical?
  • How to determine the number of bytes necessary to store an uncompressed grayscale image of size 8000 × 3400 pixels?
  • Import image with Perl
  • Nginx serving single static file fails when receiving full path
  • xamarin rounded image that scales
  • shadow
    Privacy Policy - Terms - Contact Us © scrbit.com