flip exis in dataframe

To flip the axis in a dataframe in C, you can use the following steps:

1. Create a temporary dataframe to store the flipped data.
2. Get the dimensions of the original dataframe using the nrow and ncol functions.
3. Iterate through each element in the original dataframe using nested loops.
4. Swap the row and column indices of each element and assign it to the corresponding position in the temporary dataframe.
5. After iterating through all the elements, assign the flipped data from the temporary dataframe back to the original dataframe.

Here's an example code snippet that demonstrates how to flip the axis in a dataframe:

#include <stdio.h>

#define MAX_ROWS 3
#define MAX_COLS 3

void flipAxis(int data[MAX_ROWS][MAX_COLS]) {
    int temp[MAX_ROWS][MAX_COLS];
    int i, j;

    // Get the dimensions of the original dataframe
    int rows = MAX_ROWS;
    int cols = MAX_COLS;

    // Iterate through each element in the original dataframe
    for (i = 0; i < rows; i++) {
        for (j = 0; j < cols; j++) {
            // Swap the row and column indices and assign it to the temporary dataframe
            temp[j][i] = data[i][j];
        }
    }

    // Assign the flipped data from the temporary dataframe back to the original dataframe
    for (i = 0; i < cols; i++) {
        for (j = 0; j < rows; j++) {
            data[i][j] = temp[i][j];
        }
    }
}

int main() {
    int data[MAX_ROWS][MAX_COLS] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
    int i, j;

    printf("Original Data:\n");
    for (i = 0; i < MAX_ROWS; i++) {
        for (j = 0; j < MAX_COLS; j++) {
            printf("%d ", data[i][j]);
        }
        printf("\n");
    }

    flipAxis(data);

    printf("Flipped Data:\n");
    for (i = 0; i < MAX_COLS; i++) {
        for (j = 0; j < MAX_ROWS; j++) {
            printf("%d ", data[i][j]);
        }
        printf("\n");
    }

    return 0;
}

This code defines a flipAxis function that takes a 2D array data as input and flips the axis. In the main function, an example 2D array data is defined and printed before and after flipping the axis. The output will show the original and flipped data.