データハイライト関数drawDataHighlight(currentColumn)を作成し、マウスがデータポイントに近づくとデータポイントの強調とともにデータ数値を表示させるようにする。
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for row in range(rowCount): if (data.isValid(row, col)): value = data.getFloat(row, col) x = map(years[row], yearMin, yearMax, plotX1, plotX2) y = map(float(value), dataMin, dataMax, plotY2, plotY1) if (dist(mouseX, mouseY, x, y) < 3): strokeWeight(10) point(x, y) fill(0) textSize(10) textAlign(CENTER) text(nf(float(value), 0, 2), x, y-8) text(years[row], x + 35, y-8) textAlign(LEFT) |
figure_10_rollovers_py.pyde
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import FloatTable width = 720 height = 405 dataMin = 0 dataMax = 0 #Corners of the plotted time series plotX1 = 120 plotX2 = width - 80 labelX = 50 plotY1 = 60 plotY2 = height - 70 labelY = height - 25 currentColumn = 0 yearInterval = 10 volumeInterval = 10 volumeIntervalMinor = 5 years =[] value =[] def setup(): global data global dataMin global dataMax global value global years global years_str global yearMin global yearMax global plotX1 global plotX2 global plotY1 global plotY2 global labelX global labelY global currentColumn global columnCount global rowCount global yearInterval global volumeIntervalMinor global volumeInterval size(width, height) data = FloatTable.FloatTable("milk-tea-coffee.tsv") columnCount = data.getColumnCount(); years_str = data.getRowNames() for i in range(len(years_str)): years.append(int(years_str[i])) print "years=:" print years yearMin = years[0] yearMax = years[len(years) - 1] dataMax = ceil(data.getTableMax() / volumeInterval) * volumeInterval plotFont = createFont("SansSerif", 20) textFont(plotFont) smooth() def draw(): global plotX1 global plotX2 global plotY1 global plotY2 global currentColumn background(224) #Show the plot area as a white box fill(255) rectMode(CORNERS) noStroke() rect(plotX1, plotY1, plotX2, plotY2) drawTitle() drawYearLabels() drawAxisLabels() drawDataPoints(currentColumn) drawVolumeLabels() #strokeWeight(5) stroke('#5679C1') #drawDataPoints(currentColumn) noFill() strokeWeight(2) drawDataLine(currentColumn) drawDataHighlight(currentColumn) def drawDataLine(col): global rowCount global data global dataMin global dataMax global value global years global yearMin global yearMax global plotX1 global plotX2 global plotY1 global plotY2 beginShape() for row in range(rowCount): if (data.isValid(row, col)): value = data.getFloat(row, col) x = map(years[row], yearMin, yearMax, plotX1, plotX2) y = map(float(value), dataMin, dataMax, plotY2, plotY1) vertex(x, y) endShape() def drawDataPoints(col): global rowCount global data global dataMin global dataMax global value global years global yearMin global yearMax global plotX1 global plotX2 global plotY1 global plotY2 rowCount = data.getRowCount() for row in range(rowCount): if (data.isValid(row, col)): value = data.getFloat(row, col) x = map(years[row], yearMin, yearMax, plotX1, plotX2) y = map(value, dataMin, dataMax, plotY2, plotY1) point(x, y) def drawTitle(): global plotX1 global plotY1 global currentColumn fill(0) textSize(20) textAlign(LEFT) title = data.getColumnName(currentColumn) text(title, plotX1, plotY1 - 10) def drawYearLabels(): global rowCount global data global yearInterval global volumeIntervalMinor global years global yearMin global yearMax global plotX1 global plotX2 global plotY1 global plotY2 fill(0) textSize(10) textAlign(CENTER, TOP) stroke(224) strokeWeight(1) rowCount = data.getRowCount() for row in range(rowCount): if (years[row] % yearInterval == 0): x = map(years[row], yearMin, yearMax, plotX1, plotX2) text(years[row], x, plotY2 + textAscent()+ 10) line(x, plotY1, x, plotY2) def drawVolumeLabels(): global dataMin global dataMax global plotX1 global plotX2 global plotY1 global plotY2 global volumeInterval global volumeIntervalMinor fill(0) textSize(10) textAlign(RIGHT) stroke(128) strokeWeight(1) for v in range(dataMin, dataMax+1, volumeIntervalMinor): if (v % volumeIntervalMinor == 0): y = map(v, dataMin, dataMax, plotY2, plotY1) if (v % volumeInterval == 0): if (v == dataMin): textAlign(RIGHT) elif (v == dataMax): textAlign(RIGHT, TOP) else: textAlign(RIGHT, CENTER) text(floor(v), plotX1 - 10, y) line(plotX1 - 4, y, plotX1, y) else: line(plotX1 - 2, y, plotX1, y) def drawAxisLabels(): global plotX1 global plotX2 global plotY1 global plotY2 global labelX global labelY fill(0) textSize(13) textLeading(15) textAlign(CENTER, CENTER) text("Gallons\nconsumed\nper capita", labelX, (plotY1+plotY2)/2) textAlign(CENTER) text("Year", (plotX1+plotX2)/2, labelY) def drawDataHighlight(col): global data global dataMin global dataMax global value global years global years_str global yearMin global yearMax global plotX1 global plotX2 global plotY1 global plotY2 global currentColumn global columnCount global rowCount global yearInterval global volumeIntervalMinor for row in range(rowCount): if (data.isValid(row, col)): value = data.getFloat(row, col) x = map(years[row], yearMin, yearMax, plotX1, plotX2) y = map(float(value), dataMin, dataMax, plotY2, plotY1) if (dist(mouseX, mouseY, x, y) < 3): strokeWeight(10) point(x, y) fill(0) textSize(10) textAlign(CENTER) text(nf(float(value), 0, 2), x, y-8) text(years[row], x + 35, y-8) textAlign(LEFT) def keyPressed(): global currentColumn global columnCount if (key == '['): currentColumn = currentColumn - 1 if (currentColumn < 0): currentColumn = columnCount - 1 elif (key == ']'): currentColumn = currentColumn + 1 if (currentColumn == columnCount): currentColumn = 0 |