Ken
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I am not sure exactly what you ask. ?But, let me explain a feature of the SVG node that allows you to send a SVG base 64 image to the node (maps).
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If you send the following JSON object to the SVG node it will show the base 64 SVG image:
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var m =
[
{
"command": "update_attribute",
"elementId": "image",
"attributeName": "xlink:href",
"attributeValue": msg.payload
}
]
msg.payload = m
return msg;
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In this JSON, "attributeValue, is the base 64 image, or in this case, msg.payoad.
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Now you must build the upstream msg.payload, which is the base 64 version of the SVG map code.
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To build this payload, insert the sag map file after the below string, followed by a ", to complete the string.
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msg.payload = "data:image/png;base64,SVGFile"
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To help in your learning, I have attached a "build your own" map using the SVG node.
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There is a section for sending SVG files in the flow.
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There are many other individual attributes you can change to customized your rotor graphic, all
taking advantage of the advance features of the SVG Node.
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Alan. WA9WUD
