version 1.5, 2001/12/18 22:29:42
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version 1.6, 2001/12/19 18:27:30
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Line 37 sub BEGIN {
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Line 37 sub BEGIN {
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&Apache::lonxml::register('Apache::lonplot',('plot')); |
&Apache::lonxml::register('Apache::lonplot',('plot')); |
} |
} |
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## |
## |
## Tests used in checking the validitity of input |
## Tests used in checking the validitity of input |
## |
## |
Line 75 my %label_defaults =
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Line 74 my %label_defaults =
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( |
( |
xpos => {default => 0, test => $real_test }, |
xpos => {default => 0, test => $real_test }, |
ypos => {default => 0, test => $real_test }, |
ypos => {default => 0, test => $real_test }, |
color => {default => 'x000000', test => $color_test }, |
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justify => {default => 'left', |
justify => {default => 'left', |
test => sub {$_[0]=~/^(left|right|center)$/}} |
test => sub {$_[0]=~/^(left|right|center)$/}} |
); |
); |
Line 83 my %label_defaults =
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Line 81 my %label_defaults =
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my %axis_defaults = |
my %axis_defaults = |
( |
( |
color => {default => 'x000000', test => $color_test}, |
color => {default => 'x000000', test => $color_test}, |
thickness => {default => 1, test => $int_test }, |
# thickness => {default => 1, test => $int_test }, |
xmin => {default => -10.0, test => $real_test }, |
xmin => {default => -10.0, test => $real_test }, |
xmax => {default => 10.0, test => $real_test }, |
xmax => {default => 10.0, test => $real_test }, |
ymin => {default => -10.0, test => $real_test }, |
ymin => {default => -10.0, test => $real_test }, |
Line 106 sub start_plot {
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Line 104 sub start_plot {
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%plot = ''; %key=''; %axis=''; |
%plot = ''; %key=''; %axis=''; |
$title=''; $xlabel=''; $ylabel=''; |
$title=''; $xlabel=''; $ylabel=''; |
@labels = ''; @curves=''; |
@labels = ''; @curves=''; |
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# |
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; |
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; |
my $result=''; |
my $result=''; |
&Apache::lonxml::register('Apache::plot', |
&Apache::lonxml::register('Apache::plot', |
Line 130 sub end_plot {
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Line 128 sub end_plot {
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('title','xlabel','ylabel','key','axis','label','curve')); |
('title','xlabel','ylabel','key','axis','label','curve')); |
my $result = ''; |
my $result = ''; |
if ($target eq 'web') { |
if ($target eq 'web') { |
## Determine filename -- may need a better way later |
## Determine filename -- Need to use the 'id' thingy that Gerd |
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## mentioned. |
my $tmpdir = '/home/httpd/perl/tmp/'; |
my $tmpdir = '/home/httpd/perl/tmp/'; |
my $filename = $tmpdir.$ENV{'user.name'}.'_'.$ENV{'user.domain'}. |
my $filename = $tmpdir.$ENV{'user.name'}.'_'.$ENV{'user.domain'}. |
'_plot.data'; |
'_plot.data'; |
Line 138 sub end_plot {
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Line 137 sub end_plot {
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## Write the plot description to the file |
## Write the plot description to the file |
my $fh=&Apache::File->new('/home/httpd/perl/tmp/'.$realname); |
my $fh=&Apache::File->new('/home/httpd/perl/tmp/'.$realname); |
# write plot values |
&write_gnuplot_file($fh); |
# write title, xlabel, ylabel |
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# write key values |
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# write axis values |
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# write label values |
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# write curve values |
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## Ack! |
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## return image tag for the plot |
## return image tag for the plot |
$result = '<img src=\"/cgi-bin/plot.cgi?'.$usersees.'"'; |
$result = '<img src=\"/cgi-bin/plot.cgi?'.$usersees.'"'; |
} |
} |
Line 275 sub end_curve {
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Line 268 sub end_curve {
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} |
} |
return $result; |
return $result; |
} |
} |
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##------------------------------------------------------------ curve function |
##------------------------------------------------------------ curve function |
sub start_function { |
sub start_function { |
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; |
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; |
Line 300 sub end_function {
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Line 292 sub end_function {
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} |
} |
return $result; |
return $result; |
} |
} |
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##------------------------------------------------------------ curve data |
##------------------------------------------------------------ curve data |
sub start_data { |
sub start_data { |
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; |
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; |
Line 316 sub start_data {
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Line 307 sub start_data {
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&Apache::lonxml::warning('Malformed data: '.$datatext); |
&Apache::lonxml::warning('Malformed data: '.$datatext); |
$datatext = ''; |
$datatext = ''; |
} |
} |
push( @{$curves[-1]->{'data'}},$datatext; |
# Need to do some error checking on the @data array - |
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# make sure it's all numbers and make sure each array |
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# is of the same length. |
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my @data = split /[, ]/,$datatext; |
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push( @{$curves[-1]->{'data'}},\@data; |
if ($target eq 'web') { |
if ($target eq 'web') { |
# This routine should never return anything. |
# This routine should never return anything. |
} |
} |
Line 362 sub get_attributes{
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Line 357 sub get_attributes{
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my $attr; |
my $attr; |
foreach $attr (keys %defaults) { |
foreach $attr (keys %defaults) { |
$values{$attr} = &Apache::lonxml::get_param($attr,$parstack,$safeeval); |
$values{$attr} = &Apache::lonxml::get_param($attr,$parstack,$safeeval); |
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if ($values{$attr} eq '' | !defined($values{$attr})) { |
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$values{$attr} = $defaults{$attr}; |
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next; |
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} |
my $test = $defaults{$attr}->{'test'}; |
my $test = $defaults{$attr}->{'test'}; |
if (! &$test($values{$attr})) { |
if (! &$test($values{$attr})) { |
&Apache::lonxml::warning($tag.':'.$attr.': Bad value. Replacing your value with : '.$defaults{$attr}); |
&Apache::lonxml::warning |
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($tag.':'.$attr.': Bad value.'.'Replacing your value with : ' |
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.$defaults{$attr} ); |
$values{$attr} = $defaults{$attr}; |
$values{$attr} = $defaults{$attr}; |
} |
} |
return ; |
return ; |
} |
} |
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sub write_gnuplot_file { |
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my $fh = shift; |
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my $gnuplot_input = ''; |
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# Collect all the colors |
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my @Colors; |
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push @Colors, $plot{'bgcolor'}; |
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push @Colors, $plot{'fgcolor'}; |
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push @Colors, $axis{'color'}; |
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push @Colors, $axis{'color'}; |
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foreach $curve (@Curves) { |
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push @Colors, ($curve{'color'} ne '' ? |
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$curve{'color'} : |
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$plot{'fgcolor'} ); |
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} |
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# set term |
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$gnuplot_input .= 'set term gif '; |
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$gnuplot_input .= 'transparent ' if ($plot{'transparent'} eq 'on'); |
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$gnuplot_input .= $plot{'font'} . ' '; |
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$gnuplot_input .= 'size ' . $plot{'width'} . ' '; |
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$gnuplot_input .= $plot{'height'} . ' '; |
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$gnuplot_input .= "@Colors\n"; |
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# title, xlabel, ylabel |
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{ |
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$gnuplot_input .<<"ENDLABELS"; |
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set title $title->{'text'} |
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set xlabel $xlabel->{'text'} |
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set ylabel $ylabel->{'text'} |
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set xrange $axis->{'xmin'}:$axis->{'xmax'} |
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set yrange $axis->{'ymin'}:$axis->{'ymax'} |
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ENDLABELS |
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} |
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# Key |
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if (defined($key{'pos'})) { |
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$gnuplot_input .= 'set key '.$key->{'pos'}.' '; |
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$gnuplot_input .= ($key->{'box'} eq 'on' ? 'box ' : 'nobox '); |
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if ($key->{'title'} ne '') { |
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$gnuplot_input .= 'title "'$key->{'title'}.'"\n'; |
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} else { |
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$gnuplot_input .= '\n'; |
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} |
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} else { |
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$gnuplot_input .= 'set nokey\n'; |
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} |
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# axis |
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$gnuplot_input .= 'set xrange ['.$axis{'xmin'}.':'.$axis{'xmin'}.']\n'; |
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$gnuplot_input .= 'set yrange ['.$axis{'ymin'}.':'.$axis{'ymin'}.']\n'; |
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# labels |
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foreach $label (@labels) { |
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$gnuplot_input .= 'set label "'.$label->{'text'}.'" at '. |
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$label->{'x'}.','.$label->{'y'}.'\n'; |
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} |
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# curves |
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$gnuplot_input .= 'plot '; |
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my $datatext = ''; |
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foreach $curve (@curves) { |
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if (exists($curve->{'function'})) { |
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$gnuplot_input.= $curve->{'function'}.' with '.$curve->{'linestyle'}; |
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} elsif (exists($curve->{'data'})) { |
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$gnuplot_input.= '\'-\' with '.$curve->{'linestyle'}; |
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my @Data = @{$curve->{'data'}}; |
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for ($i =0; $i<=$#Data; $i++) { |
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foreach $dataset (@Data) { |
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$datatext .= $dataset[$i] . ' '; |
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} |
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$datatext .='\n'; |
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} |
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$datatext .='\n'; |
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} |
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} |
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$gnuplot_input .= $datatext; |
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print $fh $gnuplot_input; |
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} |
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1; |
1; |
__END__ |
__END__ |
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