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This is a for a school assignment so I'm really new to Processing, but I'm wanting to use 4 different colored ellipses to convey information being taken from an xml sheet and plotting them on a map using latitude and longitude. I have the coding working but only for one color, is there a way to change this so I can control multiple colors at once?
PShape baseMap;
String csv[];
String myData[][];
//Setup BaseMap and csv info
void setup() {
size(3000, 1700);
noLoop();
baseMap = loadShape("WorldMap.svg");
csv = loadStrings("WeatherCoordinates.csv");
myData = new String[csv.length][5];
for(int i=0; i<csv.length; i++) {
myData[i] = csv[i].split(",");
}
}
//draw
void draw() {
shape(baseMap, 0, 0, width, height);
noStroke();
for(int i=0; i<myData.length; i++){
fill(25, 30, 255, 70);
noStroke();
float graphLong = map(float(myData[i][3]), -180, 180, 0, width);
float graphLat = map(float(myData[i][2]), 90, -90, 0, height);
float markerSize = 5*(float(myData[i][0]));
println(graphLong + " / " + graphLat);
ellipse(graphLong, graphLat, markerSize, markerSize);
if(i<25){
fill(0);
text(myData[i][1], graphLong + markerSize + 30, graphLat);
noFill();
stroke(0);
line(1.2*graphLong+markerSize, graphLat, graphLong+markerSize, graphLat);
}
}
}
}
Answers
Just test against the variable and set the fill colour within each condition:
I don't know your data so you'll have to fill in the blanks in the above code for it to work...
the easiest way to get a spread of colours is to use HSB mode
then you can use
for a different colour for every item.
i find it's easiest to change back to RGB for things like setting background colours or graph lines.
What piece of data to i enter to replace the "???" in the line