EDIT: fixed issues in the code, but new, novel error has occurred. Posting to new thread for insight.
I'm having some issues with a homework assignment that needs me to print out a filtered copy of a 2d array. I need to create a nested for-loop that calls another method(which stores the neighbors of an index in a 1D array), finds the average of the 1D array, and then prints out a 2D array with the averages.
I was able to code the method "getNeighbors" to obtain the neighbors of an index, but when I call the method into the main, I get 6 errors:
Lab5.java:45: error: cannot find symbol getNeighbors(row, col, imageData); ^ symbol: variable imageData location: class Lab5
Lab5.java:47: error: cannot find symbol for(int i=0; i<nebs.length; i++){ ^ symbol: variable nebs location: class Lab5
Lab5.java:48: error: cannot find symbol sum += nebs[i]; ^ symbol: variable nebs location: class Lab5
Lab5.java:50: error: cannot find symbol int average = sum / nebs[i].length; ^ symbol: variable nebs location: class Lab5
Lab5.java:50: error: cannot find symbol int average = sum / nebs[i].length; ^ symbol: variable i location: class Lab5
Lab5.java:65: error: incompatible types: int[][] cannot be converted to int[] } return copyImage;
I don't know if it's mental fatigue getting to me, but I can't figure out how to properly call the method to provide the 1D neighbors array and then get the average without using variables from the getNeighbors method.
Here is my code:
public static int[][] applyFilter1(int[][] imageData){
int[][] filtered = new int[imageData.length][imageData[0].length];
for (int row=0; row<filtered.length;row++){
for (int col=0;col<filtered[row].length;col++){
getNeighbors(row, col, imageData);
int sum = 0;
for(int i=0; i<nebs.length; i++){
sum += nebs[i];
}
int average = sum / nebs[i].length;
filtered[row][col] = average;
}
}
return filtered;
}
public static int[] getNeighbors(int row, int col, int[][] imageData){
//find neighbors of current index
int [][] copyImage = new int[imageData.length][imageData[0].length];
try{
for(int r=0; r<imageData.length; r++){
for(int c=0; c<imageData[r].length; c++){
imageData[r][c] = copyImage[r][c];
}
} return copyImage;
} catch(Exception e){
System.out.println("Array copy not successful");
}
//handles the top row of the array
if(row==0){//if copyImage[0].length
if(col==0){//handles upper left corner of array
int[] nebs = {copyImage[row][col], copyImage[row+1][col],
copyImage[row][col+1]};
return nebs;
}
else if(col==copyImage[row].length-1){//handles upper right corner of array
int[] nebs = {copyImage[row][col], copyImage[row][col-1],
copyImage[row+1][col]};
return nebs;
}
else{//handles top row of array between corners
int[] nebs = {copyImage[row][col], copyImage[row][col-1],
copyImage[row+1][col], copyImage[row][col+1]};
return nebs;
}
}
//handles the bottom row of the array
else if(row==copyImage.length-1){//if the row is at max value
if(col==0){//handles botton left corner of array
int[] nebs = {copyImage[row][col], copyImage[row-1][col],
copyImage[row][col+1]};
return nebs;
}
else if(col==copyImage[row].length-1){//handles bottom right corner of array
int[] nebs = {copyImage[row][col], copyImage[row-1][col],
copyImage[row][col-1]};
return nebs;
}
else{//handles bottom row of array
int[] nebs = {copyImage[row][col], copyImage[row-1][col],
copyImage[row][col-1], copyImage[row][col+1]};
return nebs;
}
}
//handles leftmost column of array
else if(col==0){//if col=0 and row increases
int[] nebs = {copyImage[row][col], copyImage[row-1][col],
copyImage[row+1][col], copyImage[row][col+1]};
return nebs;
}
//handles rightmost column of array
else if(col==copyImage[row].length-1){//if col=max value and row increases
int[] nebs = {copyImage[row][col], copyImage[row-1][col],
copyImage[row+1][col], copyImage[row][col-1]};
return nebs;
}
//handles values in the body of the array
else{
int[] nebs = {copyImage[row][col], copyImage[row-1][col],
copyImage[row+1][col], copyImage[row][col-1],
copyImage[row][col+1]};
return nebs;
}
}
What can I do to get this to compile and execute correctly?
