How to create a specific svg file with data from a feature

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Here is a solution for whose want to create specific svg file depending on the feature dataLanguage c++ / QT4.8.5, qgis api c++ 2.8.2

A svg file contains xml codeIn this exemple we put a specific color and change the use based on the 'vitesse' parameter of the featureThis sample code draw 3 differents arrows : small medium and large ina 30x30 pixels matrix

here the function :

void createTrackIco(QgsFeature pFeature, int pTrackId,bool pUpdateIco){ QString lColorIco; QString lUseIco; double lVitesse; if (pUpdateIco) { // get the feature data lColorIco = pFeature.attribute("COLOR").toString(); lVitesse = pFeature.attribute("VITESSE").toDouble(); if (lVitesse