Andy A / plotly

plotly interface based on ardunio sample code

Dependents:   Plotly_HelloWorld

Library for plotting a simple x/y scatter chart on the plot.ly website.

See plotly_HelloWorld for sample usage.

Diff: plotly.cpp

Revision:
5:fc8eefeb301b
Parent:
4:33006c37c633
Child:
7:9409a72ab6c0
--- a/plotly.cpp	Fri Jul 11 10:10:16 2014 +0000
+++ b/plotly.cpp	Mon Jul 28 10:56:42 2014 +0000
@@ -302,6 +302,20 @@
     sendFormatedText(buffer,len);
 }
 
+void plotly::plot(float x, float y)
+{
+    if (!initalised)
+        return;
+
+    reconnectStream();
+
+    // need to prefix with the length so print it once to get the content lenght and then a second time with the prefix.
+    int len = snprintf(buffer,k_bufferSize,"{\"x\": %.3f, \"y\": %.3f}\n", x,y);
+    len = snprintf(buffer,k_bufferSize,"%x\r\n{\"x\": %.3f, \"y\": %.3f}\n\r\n",len, x,y);
+    sendFormatedText(buffer,len);
+}
+
+
 bool plotly::print_(int d)
 {
     char smallBuffer[10];