C++

Forum

 
cropping pgm file with 2d vector

miamidawgs (42)
I attempted to write a function that crops a pgm file which is stored in a 2d vector that is passed to the function. The rectangle starts at row r and column c and has number of rows is in rows. the number of columns is in columns

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
 
void pgm_crop( vector <IVec> p, int r, int c, int rows, int cols )
{
    int count = 0;      //first count variable
    int count2 = 0;    // 2nd count variable

    for( count = 0; count < r; count++ )
    {
        if( count + 1 != r )
        {            p.erase( p.begin() + count );   // erase rows before given point
        }
        else
            p.resize( rows );   // resize to number of rows            for( count2 = 0; count2 < c; count2++ )
            {
                if( count2 + 1 != c )
                {                    p[count].erase( p[count].begin() + count2 ); // erase elements before given point
                }
                else                    p[count].resize( cols );    // resize to number of columns
            }

    }}

My output is not right. any ideas on how to fix it?
Topic archived. No new replies allowed.