version 1.10, 2001/12/20 19:20:43
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version 1.14, 2001/12/21 16:59:01
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# http://www.lon-capa.org/ |
# http://www.lon-capa.org/ |
# |
# |
# 12/15/01 Matthew |
# 12/15/01 Matthew |
# 12/18 12/19 12/20 Matthew |
# 12/17 12/18 12/19 12/20 12/21 Matthew |
package Apache::lonplot; |
package Apache::lonplot; |
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use strict; |
use strict; |
Line 34 use Apache::File;
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Line 34 use Apache::File;
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use Apache::response; |
use Apache::response; |
use Apache::lonxml; |
use Apache::lonxml; |
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use Digest::MD5 qw(md5 md5_hex md5_base64); |
use Digest::MD5 qw(md5_base64); |
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sub BEGIN { |
sub BEGIN { |
&Apache::lonxml::register('Apache::lonplot',('plot')); |
&Apache::lonxml::register('Apache::lonplot',('plot')); |
Line 56 sub BEGIN {
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Line 56 sub BEGIN {
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## |
## |
## @labels: $labels[$i] = \%label |
## @labels: $labels[$i] = \%label |
## %label: text, xpos, ypos, justify |
## %label: text, xpos, ypos, justify |
## |
## |
## @curves: $curves[$i] = \%curve |
## @curves: $curves[$i] = \%curve |
## %curve: name, linestyle, ( function | data ) |
## %curve: name, linestyle, ( function | data ) |
## |
## |
## $curves[$i]->{'data'} = [ [x1,x2,x3,x4], |
## $curves[$i]->{'data'} = [ [x1,x2,x3,x4], |
## [y1,y2,y3,y4] ] |
## [y1,y2,y3,y4] ] |
Line 67 sub BEGIN {
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Line 67 sub BEGIN {
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## |
## |
## Tests used in checking the validitity of input |
## Tests used in checking the validitity of input |
## |
## |
my $int_test = sub {$_[0]=~/^\d+$/}; |
my $int_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^\d+$/}; |
my $real_test = sub {$_[0]=~/^[+-]?\d*\.?\d*$/}; |
my $real_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^[+-]?\d*\.?\d*$/}; |
my $color_test = sub {$_[0]=~/^x[\da-f]{6}$/}; |
my $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-f]{6}$/}; |
my $onoff_test = sub {$_[0]=~/^(on|off)$/}; |
my $onoff_test = sub {$_[0]=~/^(on|off)$/}; |
my $key_pos_test = sub {$_[0]=~/^(top|bottom|right|left|outside|below)+$/}; |
my $key_pos_test = sub {$_[0]=~/^(top|bottom|right|left|outside|below)+$/}; |
my $sml_test = sub {$_[0]=~/^(small|medium|large)$/}; |
my $sml_test = sub {$_[0]=~/^(small|medium|large)$/}; |
my $linestyle_test = sub {$_[0]=~/^(lines|linespoints|dots|points|steps)$/}; |
my $linestyle_test = sub {$_[0]=~/^(lines|linespoints|dots|points|steps)$/}; |
my $words_test = sub {$_[0]=~/^(\w+ *)+$/}; |
my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^(\w+ ?)+$/}; |
## |
## |
## Default values for attributes of elements |
## Default values for attributes of elements |
## |
## |
Line 108 my %label_defaults =
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Line 108 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}, |
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 }, |
ymax => {default => 10.0, test => $real_test } |
ymax => {default => ' 10.0', test => $real_test } |
); |
); |
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my %curve_defaults = |
my %curve_defaults = |
( |
( |
color => {default => 'x000000', test => $color_test }, |
color => {default => 'x000000', test => $color_test }, |
name => {default => 'x000000', test => sub {$_[0]=~/^[\w ]*$/} }, |
name => {default => '', test => $words_test }, |
linestyle => {default => 'lines', test => $linestyle_test } |
linestyle => {default => 'lines', test => $linestyle_test } |
); |
); |
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## |
## |
Line 141 sub start_plot {
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Line 141 sub start_plot {
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$inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]); |
$inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]); |
&Apache::lonxml::newparser($parser,\$inside); |
&Apache::lonxml::newparser($parser,\$inside); |
##------------------------------------------------------- |
##------------------------------------------------------- |
&get_attributes(\%plot,\%plot_defaults,$parstack,$safeeval,$tagstack); |
&get_attributes(\%plot,\%plot_defaults,$parstack,$safeeval, |
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$tagstack->[-1]); |
if ($target eq 'web') { |
if ($target eq 'web') { |
} |
} |
return ''; |
return ''; |
Line 154 sub end_plot {
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Line 155 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 ($target eq 'web') { |
## Determine filename -- Need to use the 'id' thingy that Gerd |
## |
## mentioned. |
## Make sure we have all the input we need: |
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if (! defined(%plot )) { &set_defaults(\%plot,\%plot_defaults); } |
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if (! defined(%key )) {} # No key for this plot |
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if (! defined(%axis )) { &set_defaults(\%axis,\%axis_defaults); } |
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if (! defined($title )) {} # No title for this plot |
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if (! defined($xlabel)) {} # No xlabel for this plot |
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if (! defined($ylabel)) {} # No ylabel for this plot |
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if ($#labels < 0) { } # No labels for this plot |
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if ($#curves < 0) { |
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&Apache::lonxml::warning("No curves specified for plot!!!!"); |
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return ''; |
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} |
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my $curve; |
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foreach $curve (@curves) { |
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if (!defined($curve->{'function'})&&!defined($curve->{'data'})){ |
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&Apache::lonxml::warning("One of the curves specified did not contain any <data> or <function> declarations\n"); |
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return ''; |
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} |
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} |
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## |
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## Determine filename |
my $tmpdir = '/home/httpd/perl/tmp/'; |
my $tmpdir = '/home/httpd/perl/tmp/'; |
my $filename = $tmpdir.$ENV{'user.name'}.'_'.$ENV{'user.domain'}. |
my $filename = $ENV{'user.name'}.'_'.$ENV{'user.domain'}. |
'_plot.data'; |
'_'.time.'_'.$$.'_plot.data'; |
my $usersees=md5_base64($filename.'_'.$ENV{'REMOTE_ADDR'}); |
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# my $usersees=$filename.'_'.$ENV{'REMOTE_ADDR'}; |
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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/'.$filename); |
my $fh=Apache::File->new(">$tmpdir$filename"); |
$result .= '<pre>'; |
print $fh &write_gnuplot_file(); |
$result .= &write_gnuplot_file($fh); |
close($fh); |
$result .= '</pre>'; |
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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 .= <<"ENDIMAGE"; |
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<img src = "/cgi-bin/plot.gif?$filename" |
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alt = "/cgi-bin/plot.gif?$filename" /> |
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ENDIMAGE |
} |
} |
return $result; |
return $result; |
} |
} |
Line 177 sub end_plot {
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Line 197 sub end_plot {
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sub start_key { |
sub start_key { |
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; |
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; |
my $result=''; |
my $result=''; |
&get_attributes(\%key,\%key_defaults,$parstack,$safeeval,$tagstack); |
&get_attributes(\%key,\%key_defaults,$parstack,$safeeval, |
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$tagstack->[-1]); |
if ($target eq 'web') { |
if ($target eq 'web') { |
# This routine should never return anything. |
# This routine should never return anything. |
} |
} |
Line 254 sub start_label {
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Line 275 sub start_label {
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; |
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; |
my $result=''; |
my $result=''; |
my %label; |
my %label; |
&get_attributes(\%label,\%label_defaults,$parstack,$safeeval,$tagstack); |
&get_attributes(\%label,\%label_defaults,$parstack,$safeeval, |
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$tagstack->[-1]); |
$label{'text'} = &Apache::lonxml::get_all_text("/label",$$parser[-1]); |
$label{'text'} = &Apache::lonxml::get_all_text("/label",$$parser[-1]); |
if (! &$words_test($label{'text'})) { |
if (! &$words_test($label{'text'})) { |
# I should probably warn about it, too. |
# I should probably warn about it, too. |
Line 281 sub start_curve {
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Line 303 sub start_curve {
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; |
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; |
my $result=''; |
my $result=''; |
my %curve; |
my %curve; |
&get_attributes(\%curve,\%curve_defaults,$parstack,$safeeval,$tagstack); |
&get_attributes(\%curve,\%curve_defaults,$parstack,$safeeval, |
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$tagstack->[-1]); |
push (@curves,\%curve); |
push (@curves,\%curve); |
&Apache::lonxml::register('Apache::lonplot',('function','data')); |
&Apache::lonxml::register('Apache::lonplot',('function','data')); |
push (@Apache::lonxml::namespace,'curve'); |
push (@Apache::lonxml::namespace,'curve'); |
Line 372 sub end_data {
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Line 395 sub end_data {
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sub start_axis { |
sub start_axis { |
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; |
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; |
my $result=''; |
my $result=''; |
&get_attributes(\%axis,\%label_defaults,$parstack,$safeeval,$tagstack); |
&get_attributes(\%axis,\%axis_defaults,$parstack,$safeeval, |
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$tagstack->[-1]); |
if ($target eq 'web') { |
if ($target eq 'web') { |
# This routine should never return anything. |
# This routine should never return anything. |
} |
} |
Line 388 sub end_axis {
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Line 412 sub end_axis {
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return $result; |
return $result; |
} |
} |
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##----------------------------------------------------------- set_defaults |
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sub set_defaults { |
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my $var = shift; |
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my $defaults = shift; |
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my $key; |
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foreach $key (keys %$defaults) { |
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$var->{$key} = $defaults->{$key}->{'default'}; |
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} |
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} |
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##------------------------------------------------------------------- misc |
##------------------------------------------------------------------- misc |
sub get_attributes{ |
sub get_attributes{ |
my $values = shift; |
my $values = shift; |
Line 400 sub get_attributes{
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Line 434 sub get_attributes{
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$values->{$attr} = |
$values->{$attr} = |
&Apache::lonxml::get_param($attr,$parstack,$safeeval); |
&Apache::lonxml::get_param($attr,$parstack,$safeeval); |
if ($values->{$attr} eq '' | !defined($values->{$attr})) { |
if ($values->{$attr} eq '' | !defined($values->{$attr})) { |
$values->{$attr} = $defaults->{$attr}; |
$values->{$attr} = $defaults->{$attr}->{'default'}; |
next; |
next; |
} |
} |
my $test = $defaults->{$attr}->{'test'}; |
my $test = $defaults->{$attr}->{'test'}; |
if (! &$test($values->{$attr})) { |
if (! &$test($values->{$attr})) { |
&Apache::lonxml::warning |
&Apache::lonxml::warning |
($tag.':'.$attr.': Bad value.'.'Replacing your value with : ' |
($tag.':'.$attr.': Bad value.'.'Replacing your value with : ' |
.$defaults->{$attr} ); |
.$defaults->{$attr}->{'default'} ); |
$values->{$attr} = $defaults->{$attr}; |
$values->{$attr} = $defaults->{$attr}->{'default'}; |
} |
} |
return ; |
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} |
} |
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return ; |
} |
} |
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sub write_gnuplot_file { |
sub write_gnuplot_file { |
my $fh = shift; |
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my $gnuplot_input = ''; |
my $gnuplot_input = ''; |
my $curve; |
my $curve; |
# Collect all the colors |
# Collect all the colors |
my @Colors; |
my @Colors; |
push @Colors, $plot{'bgcolor'}; |
push @Colors, $plot{'bgcolor'}; |
push @Colors, $plot{'fgcolor'}; |
push @Colors, $plot{'fgcolor'}; |
push @Colors, $axis{'color'}; |
push @Colors, (defined($axis{'color'})?$axis{'color'}:$plot{'fgcolor'}); |
push @Colors, $axis{'color'}; |
push @Colors, $Colors[-1]; # Redundancy |
foreach $curve (@curves) { |
foreach $curve (@curves) { |
push @Colors, ($curve->{'color'} ne '' ? |
push @Colors, ($curve->{'color'} ne '' ? |
$curve->{'color'} : |
$curve->{'color'} : |
$plot{'fgcolor'} ); |
$plot{'fgcolor'} ); |
} |
} |
# set term |
# set term |
$gnuplot_input .= 'set term gif '; |
$gnuplot_input .= 'set term gif '; |
Line 441 sub write_gnuplot_file {
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Line 474 sub write_gnuplot_file {
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$gnuplot_input .= ($plot{'border'} eq 'on'? |
$gnuplot_input .= ($plot{'border'} eq 'on'? |
'set border'.$/ : |
'set border'.$/ : |
'set noborder'.$/ ); # title, xlabel, ylabel |
'set noborder'.$/ ); # title, xlabel, ylabel |
{ |
$gnuplot_input .= "set output\n"; |
$gnuplot_input .= <<"ENDLABELS"; |
$gnuplot_input .= "set title \"$title\"\n" if (defined($title)) ; |
set output "-" |
$gnuplot_input .= "set xlabel \"$xlabel\"\n" if (defined($xlabel)); |
set title "$title" |
$gnuplot_input .= "set ylabel \"$ylabel\"\n" if (defined($ylabel)); |
set xlabel "$xlabel" |
if (defined(%axis)) { |
set ylabel "$ylabel" |
$gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n"; |
set xrange \[$axis{'xmin'}:$axis{'xmax'}\] |
$gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n"; |
set yrange \[$axis{'ymin'}:$axis{'ymax'}\] |
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ENDLABELS |
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} |
} |
# Key |
# Key |
if (defined($key{'pos'})) { |
if (defined(%key)) { |
$gnuplot_input .= 'set key '.$key{'pos'}.' '; |
$gnuplot_input .= 'set key '.$key{'pos'}.' '; |
$gnuplot_input .= ($key{'box'} eq 'on' ? 'box ' : 'nobox '); |
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if ($key{'title'} ne '') { |
if ($key{'title'} ne '') { |
$gnuplot_input .= 'title "'.$key{'title'}.'"'.$/; |
$gnuplot_input .= 'title "'.$key{'title'}.'" '; |
} else { |
} |
$gnuplot_input .= $/; |
$gnuplot_input .= ($key{'box'} eq 'on' ? 'box ' : 'nobox ').$/; |
} |
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} else { |
} else { |
$gnuplot_input .= 'set nokey'.$/; |
$gnuplot_input .= 'set nokey'.$/; |
} |
} |
# labels |
# labels |
my $label; |
my $label; |
foreach $label (@labels) { |
foreach $label (@labels) { |
Line 498 ENDLABELS
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Line 527 ENDLABELS
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} |
} |
$gnuplot_input .= $/.$datatext; |
$gnuplot_input .= $/.$datatext; |
return $gnuplot_input; |
return $gnuplot_input; |
# print $fh $gnuplot_input; |
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} |
} |
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1; |
1; |