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printing the graph in a output file using c  language

Posted on 2009-05-07
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Need solution for printing a graph in a output file either txt or another file using c language
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Question by:mindboom
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by:Infinity08
ID: 24325341
What kind of graph ?
For what purpose ?
Which part is it that you have trouble with ?
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by:mindboom
ID: 24333088
i am able to get the output in command prompt... i need tat to be displayed on a text file... i am facing problem with it... can anyone give a suggestion along with a sample code how to print the graph on a text file...
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Author Comment

by:mindboom
ID: 24333171
graph for finding the mainchain of a atom... in pixel format.... getting problem to displaying in txt format
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LVL 53

Expert Comment

by:Infinity08
ID: 24333425
>> i am able to get the output in command prompt... i need tat to be displayed on a text file...

Then the easiest solution is to re-direct the standard output to a file, by starting the program like this :

        ./program your_arguments > textfile.txt

The standard output will now no longer be written to the screen, but to the given textfile.txt.


You can obviously modify your code to write to a file rather than standard output. You'd have to use fopen and fclose to open and close a file resp. And you can replace all your printf calls with fprintf calls to write to the opened file.

        http://cplusplus.com/reference/clibrary/cstdio/fopen/
        http://cplusplus.com/reference/clibrary/cstdio/fclose/
        http://cplusplus.com/reference/clibrary/cstdio/fprintf/
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by:mindboom
ID: 24333785
i need a sample code format... i used fprintf...but it seems not working oor me to print the pixel in the text file....
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Expert Comment

by:Infinity08
ID: 24334072
What do you mean by "print the pixel" ? Weren't you talking about a text file ?

Can you show your code ?
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Author Comment

by:mindboom
ID: 24334283
sure... i will show u the code... i need to print the total output of the graph with all the pixel  in  a text file.
#include<stdio.h>
#include<stdlib.h>
#include"graphics.h"
#include<math.h>
#include<conio.h>
#include<stdlib.h>
 
#define TRUE 1
#define FALSE 0
 
char x_axis1[10], y_axis1[10];
 
char characterSet[2][1];
 
float a[2][1];
 
struct DataStructure
{
char value[3];
char alpha[3];
char floatingNumber1[7];
char floatingNumber2[10];
char floatingNumber3[10];
char characters[7];
}DataStruct;
 
void LeftTrim(char string[], char axis[])
{
	int i, j=0;
	int foundSpaceBeforeValue=0, foundValue=FALSE;
	for (i = 0; i<strlen(string); i++)
	{
		if(string[i] == 14)
		{
			if(foundValue == TRUE)
				goto Exit;
			else
				foundSpaceBeforeValue++;
		}
		else if(string[i] != 14)
		{
			foundValue = TRUE;
			axis[j++] = string[i];
		}
	}
	Exit: return;
}
 
int StringCompare(const char *s1, const char *s2)
{
    unsigned char uc1, uc2;
 
    /* Move s1 and s2 to the first differing characters
       in each string, or the ends of the strings if they
       are identical.  */
    while (*s1 != '\0' && *s1 == *s2) {
	s1++;
	s2++;
    }
    /* Compare the characters as unsigned char and
       return the difference.  */
    uc1 = (*(unsigned char *) s1);
    uc2 = (*(unsigned char *) s2);
    if (uc1 != uc2)
       return ((uc1 < uc2) ? -1 : (uc1 > uc2));
    else
       return 0;
}
 
void AssignNull(char *s1)
{
	while(*s1 != '\0')
		*s1 = NULL,s1++;
}
 
 
void ReadingFiles(char outputFileName[])
{
	FILE *ifile, *ofile;
	int i = 0;
	int gd=DETECT,gm;
	float x,y,p,q;
 
	long curpos;
	char readLine[40];
	initgraph(&gd,&gm,"c:\\tc\\bgi");
 
	 setfillstyle(SOLID_FILL,WHITE);
    bar(0, 0, 639, 480);
    setcolor(1);
    line(320,40,320,400);
    line(140,40,140,400);
    line(500,40,500,400);
    line(140,40,500,40);
    line(140,400,500,400);
    line(140,220,500,220);
    //biforcations:
    setcolor(7);
    line(410,40,410,400);
    line(230,40,230,400);
    line(140,130,500,130);
    line(140,310,500,310);
    //writings:
    setcolor(1);
    settextstyle(1,HORIZ_DIR,1);
    outtextxy(90,30,"+180");
    settextstyle(1,HORIZ_DIR,1);
    outtextxy(80,120,"+psi");
    settextstyle(1,HORIZ_DIR,1);
    outtextxy(120,220,"0");
    settextstyle(1,HORIZ_DIR,1);
    outtextxy(80,320,"-psi");
    settextstyle(1,HORIZ_DIR,1);
    outtextxy(90,405,"-180");
    settextstyle(1,HORIZ_DIR,1);
    outtextxy(120,420,"-180");
    settextstyle(1,HORIZ_DIR,1);
    outtextxy(200,430,"-phi");
    settextstyle(1,HORIZ_DIR,1);
    outtextxy(315,420,"0");
    settextstyle(1,HORIZ_DIR,1);
    outtextxy(400,430,"+phi");
    settextstyle(1,HORIZ_DIR,1);
    outtextxy(470,420,"+180");
 
	if ((ifile = fopen ("angl.txt","r")) == NULL)
	{
		perror("angl.txt");
		printf("Exiting program!");
		getch();
		exit(1);
	}
	else
	{
		ofile = fopen (outputFileName,"w");
		while (!feof(ifile))
		{
			fread(&DataStruct, sizeof(DataStruct), 1, ifile);
		 //	printf("%s\n", DataStruct.a);
		 //	AssignNull(characterSet[i]);
		 //	LeftTrim(DataStruct.lineNumber, characterSet[i]);
 
				if (i == 0)
				{
					LeftTrim(DataStruct.floatingNumber1, x_axis1);
					LeftTrim(DataStruct.floatingNumber2, y_axis1);
				      //	LeftTrim(DataStruct.floatingNumber3, z_axis1);
 
					a[0][0] = atof(x_axis1);a[1][0] = atof(y_axis1);
					x=a[0][0];
					y=a[1][0];
 
					if(x>0)
					{
					 p=320+x;
					 }
					 else
					 p=320-x;
 
					if(y>0)
					{
					 q=220-y;
					}
					else
					q=220+y;
 
					putpixel(p,q,4);
				}
 
					sprintf(readLine, "First Atom: %f\t%f\n", a[0][0], a[0][1]);
					fputs(readLine, ofile);
			}
		}
		fclose(ofile);
		fclose(ifile);
	}
 
 
void main()
{
	int i, j;
	int gd,gm;
 
 
	clrscr();
 
	ReadingFiles("ram.txt");
  //	ReadingFiles(1, "psiSeries.txt");
 
   //	initgraph(&gd,&gm,"c:\\tc\\bgi");
 
     //	putpixel(10,10,4);
}

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Expert Comment

by:Infinity08
ID: 24334485
You're using graphical output. How do you want to put that in a text file ?

What you probably want to do, is use an image manipulation library, like Cairo (http://cairographics.org/) or ImageMagick (http://www.imagemagick.org/script/index.php).
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Author Comment

by:mindboom
ID: 24334619
but how to print the graphical output on a text file???
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LVL 53

Expert Comment

by:Infinity08
ID: 24334685
>> but how to print the graphical output on a text file???

What do you mean ? A text file is for text data, not for graphical data.
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Author Comment

by:mindboom
ID: 24334719
graphical output on a text file nor excel....
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Accepted Solution

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Infinity08 earned 20 total points
ID: 24334851
???
As I said : a text file is for text data, NOT for graphical data.
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