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This code works perfectly on a desktop or laptop, and on non-iOS mobile devices. It takes a thumbnail sample of an edited image and displays it at full size in a new canvas. On iOS, I just see a blank screen where the canvas should be. function click5() { document.getElementById("preview").style = "visibility:visible;"; document.getElementById("cPreviewCaption").style = "font-size:90%; font-weight:550; text-align:center; color:#FFFFFF; padding-top:6px;"; // Apply change to preview image which will open beneath thumbnails var cP = document.getElementById("cPreview"); var contextP = cP.getContext("2d"); var cO = document.getElementById("cOriginal"); var contextO = cO.getContext("2d"); var imgData = contextO.getImageData(0,0,cO.width,cO.height); var data = imgData.data; //read full size image //similar image read/write code works fine in another image filter so this does not appear to be the issue for (i = 0; i < data.length; i += 4) { red[i] = imgData.data[i]; green[i] = imgData.data[i+1]; blue[i] = imgData.data[i+2]; alpha[i] = imgData.data[i+3]; } //set adjustments represented by user interaction with thumbnails for (i = 0; i < data.length; i += 4) { red[i] = red[i] + finalRedAdjust; if (red[i] < 0) red[i] = 0; if (red[i] > 255) red[i] = 255; green[i] = green[i] + finalGreenAdjust; if (green[i] < 0) green[i] = 0; if (green[i] > 255) green[i] = 255; } //write full size image with adjustments to memory for (i = 0; i < data.length; i += 4) { imgData.data[i] = red[i]; imgData.data[i+1] = green[i]; imgData.data[i+2] = blue[i]; imgData.data[i+3] = alpha[i]; } //write image in memory to file contextP.putImageData(imgData, 0, 0); //add borders for canvases. document.getElementById('cOriginal').style = "border-style:solid; border-color: #C0C0C0 #C0C0C0 #606060 #606060; visibility:hidden; display:none;"; document.getElementById('cPreview').style = "border-style:solid; border-color: #C0C0C0 #C0C0C0 #606060 #606060; visibility:visible; display:block;"; //Scroll page to preview image location.hash = "null"; location.hash = "previewAnchor"; } // End Table Click Event Functions I have tried this with small images, so dimensions and file size do not appear to be the issue. Thank you

I need some help getting weather details temperature etc. out of this GML encoded WMS response XML file. This what I get from weather service that provides open data with Catalog Service for Web (CSW), Web Map Service (WMS) and Web Feature Service (WFS). Unlike JSON/XML, I have no idea what is happening in this file. Please suggest some solution for Swift 3. <?xml version="1.0" encoding="UTF-8"?> <wfs:FeatureCollection timeStamp="2017-07-31T15:48:01Z" numberMatched="1" numberReturned="1" xmlns:wfs="http://www.opengis.net/wfs/2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:om="http://www.opengis.net/om/2.0" xmlns:omso="http://inspire.ec.europa.eu/schemas/omso/3.0" xmlns:ompr="http://inspire.ec.europa.eu/schemas/ompr/3.0" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:swe="http://www.opengis.net/swe/2.0" xmlns:gmlcov="http://www.opengis.net/gmlcov/1.0" xmlns:sam="http://www.opengis.net/sampling/2.0" xmlns:sams="http://www.opengis.net/samplingSpatial/2.0" xmlns:target="http://xml.fmi.fi/namespace/om/atmosphericfeatures/1.0" xsi:schemaLocation="http://www.opengis.net/wfs/2.0 http://schemas.opengis.net/wfs/2.0/wfs.xsd http://www.opengis.net/gmlcov/1.0 http://schemas.opengis.net/gmlcov/1.0/gmlcovAll.xsd http://www.opengis.net/sampling/2.0 http://schemas.opengis.net/sampling/2.0/samplingFeature.xsd http://www.opengis.net/samplingSpatial/2.0 http://schemas.opengis.net/samplingSpatial/2.0/spatialSamplingFeature.xsd http://www.opengis.net/swe/2.0 http://schemas.opengis.net/sweCommon/2.0/swe.xsd http://inspire.ec.europa.eu/schemas/omso/3.0 http://inspire.ec.europa.eu/schemas/omso/3.0/SpecialisedObservations.xsd http://inspire.ec.europa.eu/schemas/ompr/3.0 http://inspire.ec.europa.eu/schemas/ompr/3.0/Processes.xsd http://xml.fmi.fi/namespace/om/atmosphericfeatures/1.0 http://xml.fmi.fi/schema/om/atmosphericfeatures/1.0/atmosphericfeatures.xsd"> <wfs:member> <omso:GridSeriesObservation gml:id="WFS-l9pen.SrlipXUb8ZfAc8nS2h_8.JTowuYWbbpdOs2_llx4efR060aeWzDtdOufXlmw48rp1w36d3R0629dnTTw36d3THv7ZeWHPlhaWLLn07qmnbltQ_wp37hjvCY2PlzrUi0Kcd06aMmrhnZd2Spp25bUP8KhE4V2nBm07sk7Lh5ZefSth2ackhmZ8u_Tk51mNmbRy2ZujXl899_LJf39svLvy09MOLZliaWzL2y7KnnhlqZmzfjw7MtambTfjSV3XpmcNbbh8RNPPph3Y8tK1dCA1tunnz07s9TL46VjTsM5lbd.TLsrM0aeWzDtZXDDyw7a1I.XfwkZdOfR0rWqZdvDLyw9OvLLWhQ5ZefPryy1oSOu3Tk09PNbVfTuyRNPLLj6ad.6tavp3ZKfDLlyTadZ1fTuyVZtOs6vp3ZK02nWtNw.NO3rtr6d2StCvp3ZI_Xn0rQiZe9Dfp3dK3qm_ph2Q9m_rkh7.2XlW5Xy4emjLyp.duLfsZ1tTN_eHs39ckPf2y8q4JuXJp67Yezf1yQ9_bLyrckac.iHs39ckPf2y8q3qHLLj08NPTD0079zHRXNQ5Zcenhp6Yemnfug7d_Xd0r2pYcmnD00790fZvxYdkHHj67euzD00791d1LDk04emnfumV4OPH129dmHpp37qwwqWHJpw9NO_dOy9KfXlmw48syvBx4.u3rsw9NO_dWGFSw5NOHpp37p2XpT68s2HHlp14OPH129dmHpp37q.KWHJpw9NO_dE05s3Xnlg48fXb12YemnfubnPpv5ZcnHrl5eb.nJXmFm26XTrNv5ZceHn0dOtGnlsw7XTrn15ZsOPK6dcN.nd0dOtvXZ008N.nd0x7.2Xlhz5Wh007ctPpl4T8hNDpp25bW_dlrGq1IYA-"> <om:phenomenonTime> <gml:TimePeriod gml:id="time-interval-1-1"> <gml:beginPosition>2017-07-31T16:00:00Z</gml:beginPosition> <gml:endPosition>2017-08-02T03:00:00Z</gml:endPosition> </gml:TimePeriod> </om:phenomenonTime> <om:resultTime> <gml:TimeInstant gml:id="time-1-1"> <gml:timePosition>2017-07-31T12:00:00Z</gml:timePosition> </gml:TimeInstant> </om:resultTime> <om:procedure xlink:href="http://xml.fmi.fi/inspire/process/hirlam"/> <om:parameter> <om:NamedValue> <om:name xlink:href="http://xml.fmi.fi/inspire/process/hirlam"/> <om:value> <gml:TimeInstant gml:id="analysis-time-1-1"> <gml:timePosition>2017-07-31T12:00:00Z</gml:timePosition> </gml:TimeInstant> </om:value> </om:NamedValue> </om:parameter> <om:observedProperty xlink:href="http://data.fmi.fi/fmi-apikey/e35dc8fd-a855-4db5-a327-418120f64a86/meta?observableProperty=forecast&amp;param=GeopHeight,Temperature,Pressure,Humidity,WindDirection,WindSpeedMS,WindUMS,WindVMS,MaximumWind,WindGust,DewPoint,TotalCloudCover,WeatherSymbol3,LowCloudCover,MediumCloudCover,HighCloudCover,Precipitation1h,PrecipitationAmount,RadiationGlobalAccumulation,RadiationLWAccumulation,RadiationNetSurfaceLWAccumulation,RadiationNetSurfaceSWAccumulation,RadiationDiffuseAccumulation&amp;language=eng"/> <om:featureOfInterest> <sams:SF_SpatialSamplingFeature gml:id="enn-s-1-1-"> <sam:sampledFeature> <target:LocationCollection gml:id="sampled-target-1-1"> <target:member> <target:Location gml:id="forloc-geoid-634963-pos"> <gml:identifier codeSpace="http://xml.fmi.fi/namespace/stationcode/geoid">634963</gml:identifier> <gml:name codeSpace="http://xml.fmi.fi/namespace/locationcode/name">Tampere</gml:name> <gml:name codeSpace="http://xml.fmi.fi/namespace/locationcode/geoid">634963</gml:name> <target:representativePoint xlink:href="#point-634963"/> <target:country codeSpace="http://xml.fmi.fi/namespace/location/country">Finland</target:country> <target:timezone>Europe/Helsinki</target:timezone> <target:region codeSpace="http://xml.fmi.fi/namespace/location/region">Finland</target:region> </target:Location></target:member> </target:LocationCollection> </sam:sampledFeature> <sams:shape> <gml:MultiPoint gml:id="sf-1-1-"> <gml:pointMembers> <gml:Point gml:id="point-634963" srsName="http://www.opengis.net/def/crs/EPSG/0/4258" srsDimension="2"> <gml:name>Tampere</gml:name> <gml:pos>61.49911 23.78712 </gml:pos> </gml:Point> </gml:pointMembers> </gml:MultiPoint> </sams:shape> </sams:SF_SpatialSamplingFeature> </om:featureOfInterest> <om:result> <gmlcov:MultiPointCoverage gml:id="mpcv-1-1"> <gml:domainSet> <gmlcov:SimpleMultiPoint gml:id="mp-1-1" srsName="http://xml.fmi.fi/gml/crs/compoundCRS.php?crs=4258&amp;time=unixtime" srsDimension="3"> <gmlcov:positions> 61.49911 23.78712 1501516800 61.49911 23.78712 1501520400 61.49911 23.78712 1501524000 61.49911 23.78712 1501527600 61.49911 23.78712 1501531200 </gmlcov:positions> </gmlcov:SimpleMultiPoint> </gml:domainSet> <gml:rangeSet> <gml:DataBlock> <gml:rangeParameters/> <gml:doubleOrNilReasonTupleList> 113.01 18.26 1007.03 92.74 259.0 3.79 113.01 17.79 1007.48 90.02 250.0 3.04 113.01 17.13 1007.82 93.62 229.0 2.19 113.01 16.42 1008.18 95.53 216.0 2.26 113.01 15.9 1008.89 97.09 211.0 2.74 </gml:doubleOrNilReasonTupleList> </gml:DataBlock> </gml:rangeSet> <gml:coverageFunction> <gml:CoverageMappingRule> <gml:ruleDefinition>Linear</gml:ruleDefinition> </gml:CoverageMappingRule> </gml:coverageFunction> <gmlcov:rangeType> <swe:DataRecord> <swe:field name="GeopHeight" xlink:href="http://"/> <swe:field name="Temperature" xlink:href="http://"/> <swe:field name="Pressure" xlink:href="http://"/> <swe:field name="Humidity" xlink:href="http://"/> <swe:field name="WindDirection" xlink:href="http://"/> <swe:field name="WindSpeedMS" xlink:href="http://"/> </swe:DataRecord> </gmlcov:rangeType> </gmlcov:MultiPointCoverage> </om:result> </omso:GridSeriesObservation> </wfs:member> </wfs:FeatureCollection>

When will you add Swift 2 to w3schools so that people at least learn the basics of making ios applications?

I Am Creating A iOS WebApp [ StandAlone] Which Looks Like A iOS Application The Only Difference That It Written In HtmlAnd JavascriptWhen You Go To A Website and click on add to home screen it creates an icon with the site content [webclip] i have created a website and i need help with one little detail i found that script in my site it permit all links to open in the webapp i was trying to make the links open in safari but when i manage to do that, the navigation menu doesn't work could any one help me please ?heres the code Detect if iOS WebApp Engaged and permit navigation without deploying Safari (function(a,b,c){if(c in b&&b[c]){var d,e=a.location,f=/^(a|html)$/i;a.addEventListener("click",function(a){d=a.target;while(!f.test(d.nodeName))d=d.parentNode;"href"in d&&(d.href.indexOf("http")||~d.href.indexOf(e.host))&&(a.preventDefault(),e.href=d.href)},!1)}})(document,window.navigator,"standalone") i need to open the links in safari rather than the webapp thats it

Hi! It's my first post on the forum, and I have a question: My Website works fine on the desktop version, but when I use it on a Smartphone I have problems with Session Expired. Do someone knows if I have to threat mobile and desktop session by a different way?