added print to png button, added vers2d/run2d field

js/speccy.js

@@ -28,7 +28,7 @@
 
 
 var canvas = document.getElementById("myCanvas");
-var ctx = canvas.getContext("2d");  
+var ctx = canvas.getContext("2d", {'alpha': false});  
 ctx.canvas.width  = window.innerWidth * 0.96;
 ctx.canvas.height = window.innerHeight * 0.6;
 
@@ -519,7 +519,13 @@ function plotData() {
     var dx_inv = (xsize-padx)/(x1-x0);
     var dy_inv = (ysize-2.*pady)/(y1-y0);
     var dx2_inv = (xsize-padx)*(1.+znow)/(x1-x0);
-    ctx.clearRect (0 ,0,canvas.width, canvas.height);
+//    ctx.clearRect (0 ,0,canvas.width, canvas.height);
+
+    ctx.fillStyle = "white";
+    ctx.rect(0, 0, canvas.width, canvas.height);
+    ctx.fill();
+
+    ctx.fillStyle = "black";
     ctx.strokeStyle = "#000000";
 
     //determine the tics to use
@@ -942,6 +948,25 @@ function applyOffset(xfrac,yfrac){
     plotData();
 }
 
+function check_valid_conf_class(z_conf_person, class_person){
+    var result = false;
+//    console.log(z_conf_person);
+//    console.log(class_person);
+//    console.log(typeof z_conf_person);
+//    console.log(typeof class_person);
+    if ( (z_conf_person == 0 && class_person == "NONE") ||
+         (z_conf_person == 1 && class_person == "QSO" )) { result = true; }
+    else if ( (z_conf_person >= 2 && z_conf_person <= 3) &&
+              (class_person == "NONE" ||
+               class_person == "STAR" ||
+               class_person == "QSO" ||
+               class_person == "GALAXY" ||
+               class_person == "QSO_BAL" ||
+               class_person == "BLAZAR") ) { result = true; }
+
+    return result;
+}
+
 //see guide at https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/Forms/Sending_forms_through_JavaScript
 //write required values to url encoded string and send using an XMLHttpRequest
 function submitVIinfo(){
@@ -976,6 +1001,12 @@ function submitVIinfo(){
 	}
     }
 
+    // catch invalid combinations of class/z_conf
+    if ( !check_valid_conf_class(Number(z_conf_person), class_person) )
+    {
+        alert('Error! You supplied an illegal combination of Z_CONF_PERSON and CLASS_PERSON.');
+    }
+    
     FD.append("PLATE"        ,plate);
     FD.append("MJD"          ,mjd);
     FD.append("FIBERID"      ,fiberid);
@@ -1082,6 +1113,7 @@ function writePipeInfo(){
 	    case "PLATE":         document.getElementById("pipeParams_PLATE"        ).innerHTML = keyvals[i]; break;
 	    case "MJD":           document.getElementById("pipeParams_MJD"          ).innerHTML = keyvals[i]; break;
 	    case "FIBERID":       document.getElementById("pipeParams_FIBERID"      ).innerHTML = keyvals[i]; break;
+	    case "RUN2D":         document.getElementById("pipeParams_RUN2D"        ).innerHTML = keyvals[i]; break;
 	    case "PLUG_RA":       document.getElementById("pipeParams_PLUG_RA"      ).innerHTML = keyvals[i]; ra  = Number(keyvals[i]); break;
 	    case "PLUG_DEC":      document.getElementById("pipeParams_PLUG_DEC"     ).innerHTML = keyvals[i]; dec = Number(keyvals[i]); break;
 	    case "Z":             document.getElementById("pipeParams_Z"            ).innerHTML = precise(keyvals[i],7); break;
@@ -1283,3 +1315,12 @@ function writeLineListTable(linelist){
 	nrows ++;
     }
 }
+
+function downloadPng(){
+    var plate = parseInt(document.getElementById("pipeParams_PLATE").innerHTML);
+    var mjd = parseInt(document.getElementById("pipeParams_MJD").innerHTML);
+    var fiberid = parseInt(document.getElementById("pipeParams_FIBERID").innerHTML);
+    document.getElementById("downloader").download = "spec-" + ("0000" + plate).slice(-4) + "-" + mjd + "-" + ("0000" + fiberid).slice(-4) + ".png";
+    
+    document.getElementById("downloader").href = document.getElementById("myCanvas").toDataURL("image/png").replace(/^data:image\/[^;]/, 'data:application/octet-stream');
+}

speccy.html

@@ -75,6 +75,7 @@
 		    <th title="SDSS Plate index">Plate</th>
 		    <th title="MJD when this plate was last observed">MJD</th>
 		    <th title="SDSS fiber index">FiberID</th>
+		    <th title="SDSS 'RUN2D/VERS2D' pipeline version">RUN2D</th>
 		    <th title="Right Ascension of plugged fiber (deg, J2000)">RA<sub>plug</sub></th>
 		    <th title="Declination of plugged fiber (deg, J2000)">Dec<sub>plug</sub></th>
 		    <th title="SDSS 1D pipeline redshift">Z<sub>pipe</sub></th>
@@ -90,6 +91,7 @@
 		    <td id="pipeParams_PLATE"    ></td>
 		    <td id="pipeParams_MJD"      ></td>
 		    <td id="pipeParams_FIBERID"  ></td>
+		    <td id="pipeParams_RUN2D"    ></td>
 		    <td id="pipeParams_PLUG_RA"  ></td>
 		    <td id="pipeParams_PLUG_DEC" ></td>
 		    <td id="pipeParams_Z"        ></td>
@@ -294,6 +296,8 @@
 
 <p id="inspectInBrowser"></p>
 
+<a href="#" id="downloader" onclick="downloadPng()" download="spectrum.png"><button type="button">Download as png</button></a>
+
 <hr>
 <h4>Usage:</h4> 
 <p><blockquote><samp>http://erosita-bhm.mpe.mpg.de/speccy/speccy.html?specfile={URL}</samp></blockquote>&nbsp; (substitute URL of a valid speccy file)<br>
@@ -400,6 +404,14 @@
 <div style='text-align:left'>[<a href='/impressum'>Imprint</a> <a href='/data-protection'>Privacy Policy</a>]</div>
 
 <script src="./js/speccy.js"      type="text/javascript"></script>
+<script type="text/javascript">
+// function downloadPng(){
+//     
+//     document.getElementById("downloader").download = "image.png";
+//     document.getElementById("downloader").href = document.getElementById("myCanvas").toDataURL("image/png").replace(/^data:image\/[^;]/, 'data:application/octet-stream');
+// }
+ 
+</script>
 
 </body>
 </html>