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  Imagemap issue
Posted by vijay on Feb-22-2011 01:30
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Below mentioned perl example is  not generating imagemap . It's returning null value. I am  unable to find out issue here. Your early responsive will be a great help. we are using chartDirectory Version 5.0.3.


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#!/usr/bin/perl
use perlchartdir;

# The value to display on the meter
my $value = 45;

# Create an AugularMeter object of size 200 x 200 pixels, with silver background,
# black border, 2 pixel 3D depressed border and rounded corners.
my $m = new AngularMeter(200, 200, perlchartdir::silverColor(), 0x00FFFFFF, 0);
$m->setRoundedFrame();

$m->setBackground(0x00FFFFFF,0x00FFFFFF,0);

# Set the meter center at (100, 100), with radius 85 pixels, and span from -135 to
# +135 degress
$m->setMeter(100, 100, 85, -135, 135);

# Meter scale is 0 - 100, with major tick every 10 units, minor tick every 5 units,
# and micro tick every 1 units
$m->setScale(0, 100, 10, 5, 1);

# Disable default angular arc by setting its width to 0. Set 2 pixels line width for
# major tick, and 1 pixel line width for minor ticks.
$m->setLineWidth(0, 2, 1);

# Set the circular meter surface as metallic blue (9999DD)
$m->addRing(0, 90, perlchartdir::metalColor(0x9999dd));

# Add a blue (6666FF) ring between radii 88 - 90 as decoration
$m->addRing(88, 90, 0x6666ff);

# Set 0 - 60 as green (99FF99) zone, 60 - 80 as yellow (FFFF00) zone, and 80 - 100 as
# red (FF3333) zone
$m->addZone(0, 60, 0x99ff99);
$m->addZone(60, 80, 0xffff00);
$m->addZone(80, 100, 0xff3333);

# Add a text label centered at (100, 135) with 15 pts Arial Bold font
$m->addText(100, 135, "Units", "arialbd.ttf", 15, $perlchartdir::TextColor,
    $perlchartdir::Center);

# Add a text box centered at (100, 165) showing the value formatted to 2 decimal
# places, using white text on a black background, and with 1 pixel 3D depressed
# border
$m->addText(100, 165, $m->formatValue($value, "2"), "Arial", 8, 0xffffff,
    $perlchartdir::Center)->setBackground(0x000000, 0x000000, -1);

# Add a semi-transparent blue (40333399) pointer at the specified value
$m->addPointer($value, 0x40333399);

# Output the chart
$m->makeChart("roundmeter1.png");

my $imageMap = $m->getHTMLImageMap("", "","title='Count {value|0}'");

print 'imagemap is'.$imageMap;


-------------------

Output is

imagemap is

  Re: Imagemap issue
Posted by Peter Kwan on Feb-22-2011 02:22
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Hi vijay,

Currently, ChartDirector does not produce image map for meters, because in the majority of the cases, a meter only displays one value, and so only has one clickable point. Therefore, one may use simple HTML (eg. the <A> tag) to make the meter clickable and no image map would be needed.

For example, the following is a clickable meter with tooltips:

<a href="/cgi-bin/abcd.pl"><img src="... url for the meter image ..." title='xxxx'></a>

Hope this can help.

Regards
Peter Kwan