# Tutorial 03 -Code Logic: Functions, Conditionals and Loops

`import csvdef setup(): size(480,120)with open(“4.5_week.csv”) as e: reader = csv.reader(e) header = reader.next() # skip the header row. print header  global magnitudes # means make this “ magnitudes” as global varmagnitudes = [] # make a group  for row in reader: # var = row  magnitude = float(row[4]) magnitude+=1 magnitudes.append(magnitude) print magnitudes def draw(): background(0)scalar = 10 x = 0 for magnitude in magnitudes: leftEdge = x — (magnitude*scalar)/2 rightEdge = x + (magnitude*scalar)/2 if leftEdge < mouseX and mouseX<rightEdge: fill(155,221,255) # columbia’s color rectMode(CENTER) rect(x,height/2,magnitude*scalar*1.5,magnitude*scalar*1.5,8)else: fill(255,255,255)ellipse(x,height/2,magnitude*scalar,magnitude*scalar) x+=5 saveFrame(‘output.png’)`
`import csvdef setup(): size(480,480)with open(“4.5_week.csv”) as e: reader = csv.reader(e) header = reader.next() # skip the header row. print header  global magnitudes # means make this “ magnitudes” as global var global lats global lonsmagnitudes = [] lats = [] lons = [] # make a group  for row in reader: # var = row  magnitude = float(row[4])magnitudes.append(magnitude) # print magnitudeslat = float(row[1])  lats.append(lat) # print lats  lon = float(row[2])  lons.append(lon) # print latsdef draw(): background(0)scalar = 0.8 x = 0 i = 0 t = 3 while i < len(magnitudes): lon = lons[i] lat = lats[i]  magnitude = magnitudes[i] u = lon+width/2 v = (-lat)+height/2 # (-lat)   # set range xleftEdge = u-(magnitude*scalar)/4 xrightEdge = u+(magnitude*scalar)/4 yleftEdge = v-(magnitude*scalar)/4 yrightEdge = v+(magnitude*scalar)/4if (xleftEdge < mouseX and mouseX< xrightEdge) and (yleftEdge< mouseY and mouseY <yrightEdge): fill(155,221,255) # columbia’s color rectMode(CENTER) rect(u,v,magnitude*scalar*t,magnitude*scalar*t,8) textSize(12) text(“The magnitude of this earthquake is located at “+ str(lat)+”, “+str(lon), 30,height*3/4) else: fill(255,255,255) ellipse(u,v,magnitude*scalar,magnitude*scalar) i+=1`
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