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    <p>I answered this question before he becomes a bounty. It looks like the OP find my previous answer a little bit complicated. I organized the code in a single gist <a href="https://gist.github.com/agstudy/5024781" rel="noreferrer">here</a>. you need just to download the file and source it.</p> <p>I create new function <code>extra.calendarHeat</code> which is an extension of the first one to draw hetmap of double time series.(dat,value1,value2). I addedthis new parameters:</p> <pre><code> pch.symbol : vector of symbols , defualt 15:20 cex.symbol : cex of the symbols , default = 2 col.symbol : color of symbols , default #00000044 pvalues : value of symbols </code></pre> <p>Here some examples:</p> <pre><code>## I am using same data stock &lt;- "MSFT" start.date &lt;- "2012-01-12" end.date &lt;- Sys.Date() quote &lt;- paste("http://ichart.finance.yahoo.com/table.csv?s=", stock, "&amp;a=", substr(start.date,6,7), "&amp;b=", substr(start.date, 9, 10), "&amp;c=", substr(start.date, 1,4), "&amp;d=", substr(end.date,6,7), "&amp;e=", substr(end.date, 9, 10), "&amp;f=", substr(end.date, 1,4), "&amp;g=d&amp;ignore=.csv", sep="") stock.data &lt;- read.csv(quote, as.is=TRUE) p1 &lt;- extra.calendarHeat(dates= stock.data$Date, values = stock.data$Adj.Close, pvalues = stock.data$Volume, varname="W&amp;B MSFT Adjusted Close \n Volume as no border symbol ") </code></pre> <p><img src="https://i.stack.imgur.com/mCjxp.png" alt="enter image description here"></p> <pre><code>## multiply symbols p2 &lt;- extra.calendarHeat(dates= stock.data$Date, values = stock.data$Adj.Close, pvalues = stock.data$Volume, varname="W&amp;B MSFT Adjusted Close \n black Volume as multiply symbol ", pch.symbol = c(3,4,8,9), col.symbol='black') </code></pre> <p><img src="https://i.stack.imgur.com/vQZwR.png" alt="enter image description here"></p> <pre><code>## circles symbols p3 &lt;- extra.calendarHeat(dates= stock.data$Date, values = stock.data$Adj.Close, pvalues = stock.data$Volume, varname="W&amp;B MSFT Adjusted Close \n blue Volume as circles", pch.symbol = c(1,10,13,16,18), col.symbol='blue') </code></pre> <p><img src="https://i.stack.imgur.com/RbZbJ.png" alt="enter image description here"></p> <pre><code>## triangles symbols p4 &lt;- extra.calendarHeat(dates= stock.data$Date, values = stock.data$Adj.Close, pvalues = stock.data$Volume, varname="W&amp;B MSFT Adjusted Close \n red Volume as triangles", pch.symbol = c(2,6,17,24,25), col.symbol='red') </code></pre> <p><img src="https://i.stack.imgur.com/pSdAZ.png" alt="enter image description here"></p> <pre><code>p5 &lt;- extra.calendarHeat(dates= stock.data$Date, values = stock.data$Adj.Close, varname="MSFT Adjusted Close", pch.symbol = LETTERS, col.symbol='black') </code></pre> <p><img src="https://i.stack.imgur.com/UWg4z.png" alt="enter image description here"></p> <pre><code># symbols are LETTERS p6 &lt;- extra.calendarHeat(dates= stock.data$Date, values = stock.data$Adj.Close, pvalues = stock.data$Volume, varname="MSFT Adjusted Close \n Volume as LETTERS symbols", pch.symbol = letters, color='r2b') </code></pre> <p><img src="https://i.stack.imgur.com/7Ityc.png" alt="enter image description here"></p>
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    1. COthis is really impressive. I'll keep the bounty going for a little longer and then award it. I really appreciate that you put all your code in _one place_. Thanks!
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    2. CO@EricFail thakns for choosing this answer. just I am curious you will use it in which context?
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    3. COI am tracking client contacts in a clinic. We have a range of different contact types and tests that we need to keep an eye on and we only have access to a black and white laser printer–or a black and grey-tones printer. Again, I appreciate your help.
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