Differences

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--- plugin:graphviz [2017-02-13 12:49] – [FAQ] 129.247.247.240
+++ plugin:graphviz [2022-05-05 16:50] (current) – [Example] 47.57.142.223
@@ Line 31: / Line 31: @@
 ===== Download and Installation =====
-Download and install the plugin using the [[plugin:plugin|Plugin Manager]] using the URL given above. Refer to [[:Plugins]] on how to install plugins manually.
+Search and install the plugin using the [[plugin:extension|Extension Manager]]. Refer to [[:Plugins]] on how to install plugins manually.
 ==== Changes ====
@@ Line 98: / Line 98: @@
 </graphviz>
 </code>
 {{ http://img97.imageshack.us/img97/2613/dotb.png?nolink& }}
-===== Compatibility =====
+===== how to display dot MAPs =====
-Not working after upgrade to [2016-06-26a] "Elenor of Tsort". Would be great to see a fix. We use this heavily. The upgrade fixed the slow LDAP performance, but we lost all our graphs :-( .
-Fabio.
+  * For UNIX users ( since assumes a PATH of /usr/bin/dot )
+Using an old version of Graphviz I fixed to display **dot** maps //(nodes that when you click on them  link to a URL ie another page in your wiki or an external link.) //
+This is a fragment of the render section of the syntax file ie ( I replaced my render function with this ):
+<file PHP r.php>
+  /**
+   * Create output
+   */
+  function render($mode, &$renderer, $data) {
+    global $conf;
+    global $gr_ext;
+    $gr_ext='png';
+    $grf_ext='.'.$gr_ext;
+    if($data[1] == 'map' && strlen($data[0]) > 1) {
+      if ( !is_dir($conf['mediadir'] . '/graphviz') )
+	io_mkdir_p($conf['mediadir'] . '/graphviz'); //Using dokuwiki framework
+      $hash = md5(serialize($data));
+      $filename = $conf['mediadir'] . '/graphviz/'.$hash.$grf_ext;
+      $url = ml('graphviz:'.$hash.$grf_ext); //Using dokuwiki framework
+      //$renderer->doc .= '<p> valor filename=['.$filename.']</p>';
+      //$renderer->doc .= '<p> valor url=['.$url .']</p>';
+      // if already exist render
+      if ( is_readable($filename) ) {
+	// cached.
+        // generate the map to variable
+        $kk1 = "sed '1d'|sed '\$d'";
+        $cmd = "echo '$data[0]' | /usr/bin/dot -Tcmapx | ".$kk1;
+ 	//$renderer->doc .= '<p> DSP-graph value cmd=>['.$cmd.']</p>'; //Debug cmd
+        exec( $cmd, $map);
+        //$renderer->doc .= '<p> valor map=['.$map .']</p>';
+        $maphtml = implode("\n",$map);
+        // add the target - cant do this with DOT
+        $maphtml = str_replace("<area ", "<area target=\"".$hash."\" ",$maphtml);
+        // Include Map in the page
+	$renderer->doc .= '<map id="'.$hash.'" name="'.$hash.'">';
+ 	$renderer->doc .= $maphtml;
+ 	$renderer->doc .= '</map>';
+        // Link the Image below with the map above by hash
+	$renderer->doc .= '<img src="'.$url.'" border="0" usemap="#'.$hash.'" Ismap>';
+	return true;
+      }
+      if (!$this->createImageMap($filename, $data[0], $data[1])) {
+        // generate the map
+        $kk1 = "sed '1d'|sed '\$d'";
+        $cmd = "echo '$data[0]' | /usr/bin/dot -Tcmapx | ".$kk1;
+ 	//$renderer->doc .= '<p> CR-graph value cmd=>['.$cmd.']</p>'; //Debug cmd
+        exec( $cmd, $map);
+        $maphtml= implode("\n",$map);
+        // add the target - cant do this with DOT
+        $maphtml=str_replace("<area ", "<area target=\"".$hash."\"",$maphtml);
+        // Include Map in the page
+	$renderer->doc .= '<map id="'.$hash.'" name="'.$hash.'">';
+ 	$renderer->doc .= $maphtml;
+ 	$renderer->doc .= '</map>';
+        // Link the Image below with the map above by hash
+	$renderer->doc .= '<img src="'.$url.'" border="0" usemap="#'.$hash.'" Ismap>';
+      } else {
+	$renderer->doc .= '**ERROR RENDERING GRAPHVIZ**';
+      }
+      return true;
+   }
+</file>
+My 2 cents to this wonderful dokuwiki community that has given me so much through the years.
+Regards, \\ Enrique M
+Sign update: "UnUZYQK2Yh4qWKI4U5rMjU9IdfGvDSWWQP+rVbQA/oo="
+==== Hyperlinks from Graphviz nodes ====
+If you want links from the nodes, you can use this forked version:
+https://github.com/splitbrain/dokuwiki-plugin-graphviz/issues/12
+Hopefully the fix will be merged soon in the official version..
+Fabio
+===== Compatibility =====
-----
 It seems to be compatible with "Rincewind", but I don't dare to list it as compatible based on only my test.
@@ Line 180: / Line 273: @@
 == Does the server need an access to Internet ? ==
-Yes, it uses Google API to generate graphs.
+Default: Yes, it uses Google API to generate graphs.\\
+However, it can be set up to point straight to a local install of graphiz. In that case no internet access is needed.
 == How to read external dot File? ==
 How can i render an external (autogenerated) dot file?
+== How to include images in HTML-Labels? ==