PHP PHPlot::SetCallback方法代码示例

    // col+1 skips over the row's label
    if ($d >= 80) {
        return 0;
    }
    if ($d >= 60) {
        return 1;
    }
    return 2;
}
# The data array has our monthly performance as a percentage.
$data = array(array('Jan', 95), array('Feb', 75), array('Mar', 83), array('Apr', 66), array('May', 90), array('Jun', 80), array('Jul', 70), array('Aug', 50), array('Sep', 60), array('Oct', 70), array('Nov', 80), array('Dec', 45));
$plot = new PHPlot(800, 600);
$plot->SetImageBorderType('plain');
// Improves presentation in the manual
$plot->SetPlotType('bars');
$plot->SetDataValues($data);
$plot->SetDataType('text-data');
$plot->SetTitle('Monthly Performance Rating');
# Turn off X Tick labels which have no meaning here.
$plot->SetXTickPos('none');
# Force the Y axis to be exactly 0:100
$plot->SetPlotAreaWorld(NULL, 0, NULL, 100);
# Establish the function 'pickcolor' as a data color selection callback.
# Set the $data array as the pass-through argument, so the function has
# access to the data values without relying on global variables.
$plot->SetCallback('data_color', 'pickcolor', $data);
# The three colors are meaningful to the data color callback.
$plot->SetDataColors(array('green', 'yellow', 'red'));
# The legend will explain the use of the 3 colors.
$plot->SetLegend(array('Exceeded expectations', 'Met expectations', 'Failed to meet expectations'));
$plot->DrawGraph();

    $row = array('', $x);
    for ($j = 0; $j < 10; $j++) {
        $row[] = mt_rand(0, $x + $j);
    }
    $data[] = $row;
}
# This gets imploded to be the title, after options are added on:
$title = array("Lines plot");
if ($tp['truecolor']) {
    $p = new PHPlot_truecolor(1024, 768);
    $title[] = "Truecolor";
} else {
    $p = new PHPlot(1024, 768);
    $title[] = "Palette Color";
}
$p->SetCallback('draw_setup', 'pre_plot');
$p->SetCallback('draw_all', 'post_plot');
# Reload data colors and apply alpha to all:
if (isset($tp['alpha'])) {
    $p->SetDataColors(NULL, NULL, $tp['alpha']);
    $title[] = "Alpha=" . $tp['alpha'];
}
$p->SetFileFormat($tp['output']);
$title[] = strtoupper($tp['output']) . ' Output';
if ($tp['antialias']) {
    $title[] = "Antialiased";
}
if ($tp['noalphablend']) {
    $title[] = "No alpha blending";
}
if (isset($tp['gamma'])) {

    # Specify the font argument as NULL or '' to use the generic one.
    $plot->DrawText('', 0, $worst_x, $worst_y - 10, $red, 'Bad News!', 'center', 'bottom');
}
# Begin main processing:
# Fill the data array:
$data = get_data();
# Find the best and worst months:
get_best_worst($data, $best_index, $best_sales, $worst_index, $worst_sales);
# Create the PHPlot object, set title, plot type, data array type, and data:
$plot = new PHPlot(800, 600);
$plot->SetTitle('Monthly Widget Sales');
$plot->SetPlotType('bars');
$plot->SetDataType('text-data');
$plot->SetDataValues($data);
# Borders are needed for the manual:
$plot->SetImageBorderType('plain');
# Select X data labels (not tick labels):
$plot->SetXTickPos('none');
$plot->SetXTickLabelPos('none');
$plot->SetXDataLabelPos('plotdown');
# Format Y labels as "$nM" with no decimals, steps of 5:
$plot->SetYLabelType('data', 0, '$', 'M');
$plot->SetYTickIncrement(5.0);
# Force the bottom of the plot to be at Y=0, and omit
# the bottom "$0M" tick label because it looks odd:
$plot->SetPlotAreaWorld(NULL, 0);
$plot->SetSkipBottomTick(True);
# Establish the drawing callback to do the annotation:
$plot->SetCallback('draw_all', 'annotate_plot', $plot);
# Draw the graph:
$plot->DrawGraph();

# Color callback - data-data-error plots, baseline
# This is the baseline script. Other scripts define the variables below,
# then include this script.
#    $plot_type : one of the types that accepts text-data (or text-data-yx)
#    $data_type : (only supports the default data-data-error)
#    $subtitle  : Optional addition to title
# Scripts define a color callback function 'pick_color' to test the callback.
require_once 'phplot.php';
if (!isset($plot_type)) {
    $plot_type = 'lines';
}
if (!isset($data_type)) {
    $data_type = 'data-data-error';
}
$title = "Data Color Callback - {$plot_type}, {$data_type}";
$data = array(array('', 0, 10, 2, 2, 5, 2, 2), array('', 1, 11, 2, 1, 7, 1, 1), array('', 2, 13, 1, 1, 4, 1, 2), array('', 3, 16, 1, 2, 8, 2, 1), array('', 4, 20, 3, 0, 3, 2, 1), array('', 5, 25, 0, 2, 0, 2, 0));
$plot = new PHPlot(800, 600);
if (function_exists('pick_color')) {
    $title .= "\nWith data color callback";
    $plot->SetCallback('data_color', 'pick_color');
} else {
    $title .= "\nDefault data colors";
}
if (isset($subtitle)) {
    $title .= ' ' . $subtitle;
}
$plot->SetDataValues($data);
$plot->SetDataType($data_type);
$plot->SetPlotType($plot_type);
$plot->SetTitle($title);
$plot->DrawGraph();

        $color_index = imagecolorresolve($img, 146, 146, 146);
    }
    imagestring($img, 3, $x, $y, "CB: {$arg}", $color_index);
    $y += 20;
    # Mark it has being called:
    unset($wasnt_called[$arg]);
}
function fatal($message)
{
    fwrite(STDERR, "ERROR: {$message}\n");
    exit(1);
}
$data = array(array('A', -3, 6), array('B', -2, 4), array('C', -1, 2), array('D', 0, 0), array('E', 1, -2), array('F', 2, -4), array('G', 3, -6));
$p = new PHPlot(400, 300);
foreach ($cblist as $cbname) {
    if (!$p->SetCallback($cbname, 'cb', $cbname)) {
        fatal("Invalid callback: {$cbname}");
    }
}
# Test valid/invalid callbacks:
if ($p->SetCallback('no-such-callback', 'cb')) {
    fatal("Did not return false for invalid SetCallback reason");
}
if ($p->GetCallback('no-such-callback', 'cb')) {
    fatal("Did not return false for invalid GetCallback reason");
}
if ($p->RemoveCallback('no-such-callback', 'cb')) {
    fatal("Did not return false for invalid RemoveCallback reason");
}
foreach ($cblist as $cbname) {
    $v = $p->GetCallback($cbname);

<?php

# $Id: data_table.example2.php 999 2011-08-05 19:00:48Z lbayuk $
# phplot / contrib / data_table example 2: Line plot with data table on the side
require_once 'phplot.php';
require_once 'data_table.php';
$data = array();
for ($i = 0; $i < 20; $i++) {
    $data[] = array('', $i, 2 * $i, $i * $i);
}
// The $settings array configures the data table:
$settings = array('headers' => array(NULL, 'X', '2Y', 'Y^2'), 'position' => array(640, 20), 'width' => 150, 'data' => $data, 'font' => 3);
$plot = new PHPlot(800, 600);
$plot->SetTitle('Line Plot with Data Table on Right Side');
$plot->SetDataValues($data);
$plot->SetDataType('data-data');
$plot->SetPlotType('linepoints');
$plot->SetPlotAreaPixels(NULL, NULL, 630, NULL);
$plot->SetCallback('draw_graph', 'draw_data_table', $settings);
$plot->SetLegend(array('2Y', 'Y^2'));
$plot->DrawGraph();

// Use data_color callback?
# 2 data sets
$data2 = array(array('', 0, 1), array('', 2, 3), array('', 3, 4), array('', 4, 5));
# 3 data sets:
$data3 = array(array('', 0, 2, 3), array('', 4, 5, 6), array('', 5, 6, 7), array('', 6, 7, 8));
# A data_color callback which is the same as the standard
# no-callback behavior, but presence of a callback changes
# how colors are allocated.
function sdc($img, $unused, $row, $col)
{
    return $col;
}
$title = "Multiplot vs data colors, type {$plot_type}";
$p = new PHPlot(800, 800);
if ($do_callback) {
    $p->SetCallback('data_color', 'sdc');
    $title .= ", with data_color callback";
}
$p->SetPrintImage(False);
$p->SetTitle($title);
$p->SetPlotType($plot_type);
$p->SetLineStyles('solid');
$p->SetDataType('text-data');
$p->SetPlotAreaWorld(0, 0, 4, 10);
$p->SetPlotAreaPixels(60, 60, 339, 339);
$p->SetDataValues($data3);
$p->DrawGraph();
$p->SetPlotAreaPixels(460, 60, 739, 339);
$p->SetDataValues($data2);
$p->DrawGraph();
$p->SetPlotAreaPixels(60, 460, 339, 739);

    # Data for points, linepoints:
    $data = array(array('', 0, 0, 1), array('', 1, 2, 1), array('', 2, 4, 2), array('', 3, 6, 3), array('', 4, 8, 5), array('', 5, 10, 8), array('', 6, 12, 12), array('', 7, 14, 20));
}
$plot = new PHPlot(800, 600);
$plot->SetFailureImage(False);
// No error images
$plot->SetPrintImage(False);
// No automatic output
$plot->SetTitle("'{$plot_type}' {$what} with image map");
$plot->SetImageBorderType('plain');
$plot->SetDataValues($data);
$plot->SetDataType($data_type);
$plot->SetPlotType($plot_type);
$plot->SetXTickIncrement(1);
# Check return value in case callback isn't defined:
if (!$plot->SetCallback('data_points', 'store_map', $data)) {
    die("Missing callback\n");
}
$plot->DrawGraph();
$data_url = $plot->EncodeImage();
$html = <<<END
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
     "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>PHPlot Example - Inline Image</title>
</head>
<body>
<h1>PHPlot Example - Inline Image</h1>
<map name="map1">
{$image_map}</map>

# Now grab the font array, checking for old vs new name:
if (isset($p->generic_font)) {
    $font = $p->generic_font;
} elseif (isset($p->fonts['generic'])) {
    $font = $p->fonts['generic'];
} else {
    die("drawtext.php failure: Unable to determine font class variable name\n");
}
# Assign colors:
$black = imagecolorallocate($img, 0, 0, 0);
$white = imagecolorallocate($img, 0xff, 0xff, 0xff);
$red = imagecolorallocate($img, 0xff, 0, 0);
$green = imagecolorallocate($img, 0, 0xcc, 0);
$blue = imagecolorallocate($img, 0, 0, 0xff);
# Register the callback for drawing the bounding box:
$p->SetCallback('debug_textbox', 'draw_bbox', $green);
# Array indexes are factors to offset the point from center.
# Note: These are for the corrected top/bottom meaning after PHPlot-5.0.4
$v_opts = array(1 => 'top', 0 => 'center', -1 => 'bottom');
$h_opts = array(1 => 'left', 0 => 'center', -1 => 'right');
$cx = $width / 2;
$cy = $height / 2;
$x_off = $height / 4.0;
$y_off = $width / 4.0;
# Because we don't let PHPlot finish drawing, we need to set the background.
imagefilledrectangle($img, 0, 0, $width, $height, $white);
if (isset($tp['line_spacing'])) {
    $p->SetLineSpacing($tp['line_spacing']);
}
# Draw a title:
ImageString($img, '3', 5, 5, $title, $black);

{
    global $warn_level, $danger_level;
    // Fetch the Z value from the array with rows
    // that look like:  (label, X, Yi, Zi, Yi, Zi...)
    // $col is 0 for the first Y,Z pair, 1 for the second, etc.
    $z = $data[$row][2 * $col + 3];
    if ($z < $warn_level) {
        return 0;
    }
    // Green
    if ($z < $danger_level) {
        return 1;
    }
    // Yellow
    return 2;
    // Red
}
$data = array();
mt_srand(1);
for ($i = 0; $i < $n_p; $i++) {
    $data[] = array('', mt_rand(0, $max_x - 1), mt_rand(0, $max_y - 1), mt_rand(0, $max_z - 1));
}
$p = new PHPlot(1024, 768);
$p->SetTitle("Bubble Plot - Random Scatterplot with Custom Data Colors");
$p->SetCallback('data_color', 'getcolor', $data);
$p->SetDataType('data-data-xyz');
$p->SetDataColors(array('green', 'yellow', 'red'));
$p->SetPlotType('bubbles');
$p->SetPlotAreaWorld(0, 0, $max_x, $max_y);
$p->SetDataValues($data);
$p->DrawGraph();

<?php

# $Id$
# PHPlot test: Box plot, with image map area outlines shown.
# This produces a plot image with the areas that would be in an image map
# outlined. It does not produce HTML or an image map.
require_once 'phplot.php';
$data = array(array('A', 1, 10, 12, 15, 17, 20), array('B', 2, 5, 10, 16, 20, 24, 2, 3, 4), array('C', 3, 12, 13, 14, 15, 16, 20), array('D', 4, 10, 11, 12, 13, 14), array('E', 5, 12, 12, 15, 18, 20), array('F', 6, 12, 14, 16, 18, 18), array('G', 7, 10, 10, 15, 20, 20));
$data_type = 'data-data';
$plot_type = 'boxes';
$title = "PHPlot Test: {$plot_type} plot with image map areas outlined";
# Callback for 'data_points': Outline the area
function store_map($im, $passthru, $shape, $row, $col, $x1, $y1, $x2, $y2)
{
    static $color = NULL;
    if (!isset($color)) {
        $color = imagecolorallocate($im, 255, 0, 0);
    }
    imagesetthickness($im, 3);
    imagerectangle($im, $x1, $y1, $x2, $y2, $color);
    imagesetthickness($im, 1);
}
$plot = new PHPlot(800, 600);
$plot->SetTitle($title);
$plot->SetImageBorderType('plain');
$plot->SetDataValues($data);
$plot->SetDataType($data_type);
$plot->SetPlotType($plot_type);
$plot->SetPlotAreaWorld(0, 0, 8, 25);
$plot->SetCallback('data_points', 'store_map');
$plot->DrawGraph();

# Skip the test with older PHPlot versions that do not support the
# DrawText() font argment variations.
if (!defined('PHPlot::version_id') || PHPlot::version_id < 60000) {
    echo "Skipping test: missing new DrawText() font argument support\n";
    exit(2);
}
function my_draw($img, $plot)
{
    $black = imagecolorresolve($img, 0, 0, 0);
    $x = 100;
    $y = 50;
    $dy = 30;
    $plot->DrawText('', 0, $x, $y += $dy, $black, 'Font="" (generic): sans italic 12pt');
    $plot->DrawText('generic', 0, $x, $y += $dy, $black, 'Font="generic": sans italic 12pt');
    $plot->DrawText('legend', 0, $x, $y += $dy, $black, 'Font="legend": serif bold 14pt');
    $plot->DrawText($plot->fonts['title'], 0, $x, $y += $dy, $black, 'Font=fonts["title"]: sans 12pt');
    $plot->DrawText('x_title', 0, $x, $y += $dy, $black, 'Font="x_title": mono bold 10pt');
}
$data = array(array('', 0, 0), array('', 10, 10));
$plot = new PHPlot(800, 600);
$plot->SetTitle("DrawText() Font Argument Test\nTitle is sans 12pt");
$plot->SetDataType('data-data');
$plot->SetDataValues($data);
$plot->SetPlotType('lines');
$plot->SetTTFPath($phplot_test_ttfdir);
$plot->SetFontTTF('title', $phplot_test_ttfonts['sans'], 12);
$plot->SetFontTTF('generic', $phplot_test_ttfonts['sansitalic'], 12);
$plot->SetFontTTF('legend', $phplot_test_ttfonts['serifbold'], 14);
$plot->SetFontTTF('x_title', $phplot_test_ttfonts['monobold'], 10);
$plot->SetCallback('draw_all', 'my_draw', $plot);
$plot->DrawGraph();