diff options
| -rw-r--r-- | fpdf_test.go | 56 |
1 files changed, 55 insertions, 1 deletions
diff --git a/fpdf_test.go b/fpdf_test.go index 09f4d39..7969f94 100644 --- a/fpdf_test.go +++ b/fpdf_test.go @@ -23,6 +23,7 @@ import ( "io" "io/ioutil" "math" + "math/rand" "net/http" "os" "path/filepath" @@ -2381,4 +2382,57 @@ func ExampleFpdf_SubWrite() { example.Summary(err, fileStr) // Output: // Successfully generated pdf/Fpdf_SubWrite.pdf -}
\ No newline at end of file +} + +func ExampleChangePage() { + pdf := gofpdf.New("P", "cm", "A4", "") + pdf.SetFont("Times", "", 12) + + var time []float64 + temperaturesFromSensors := make([][]float64, 5) + maxs := []float64{25, 41, 89, 62, 11} + for i := range temperaturesFromSensors { + temperaturesFromSensors[i] = make([]float64, 0) + } + + for i := 0.0; i < 100; i += 0.5 { + time = append(time, i) + for j, sensor := range temperaturesFromSensors { + dataValue := rand.Float64() * maxs[j] + sensor = append(sensor, dataValue) + temperaturesFromSensors[j] = sensor + } + } + var graphs []gofpdf.GridType + var pageNums []int + xMax := time[len(time)-1] + for i := range temperaturesFromSensors { + //Create a new page and graph for each sensor we want to graph. + pdf.AddPage() + pdf.Ln(1) + //Custom label per sensor + pdf.WriteAligned(0, 0, "Temperature Sensor "+strconv.Itoa(i+1)+" (C) vs Time (min)", "C") + pdf.Ln(0.5) + graph := gofpdf.NewGrid(pdf.GetX(), pdf.GetY(), 20, 10) + graph.TickmarksContainX(0, xMax) + //Custom Y axis + graph.TickmarksContainY(0, maxs[i]) + graph.Grid(pdf) + //Save references and locations. + graphs = append(graphs, graph) + pageNums = append(pageNums, pdf.PageNo()) + } + // For each X, graph the Y in each sensor. + for i, currTime := range time { + for j, sensor := range temperaturesFromSensors { + pdf.SetPage(pageNums[j]) + graph := graphs[j] + temperature := sensor[i] + pdf.Circle(graph.X(currTime), graph.Y(temperature), 0.04, "D") + } + } + + fileStr := example.Filename("Fpdf_SetPage") + err := pdf.OutputFileAndClose(fileStr) + example.Summary(err, fileStr) +} |