Q:

R: flexdashboard shrinks content, any way to prevent this? 

I ran R markdown with 8 stocks and with 12 stocks.   As you can see the stock charts get increasingly smaller.   Is there any way to force flexdashboard to keep a larger width?  I don't mind vertically scrolling when there are 12 or more stocks on a screen. 
rmarkdown::render('foo. Rmd')
# creates foo.html

foo. Rmd
---
title: "Semiconductor: 5 years"
output:
  flexdashboard::flex_dashboard:
    orientation: rows
---

```{r setup, include=FALSE}
library(quantmod)
options("getSymbols.warning4.0"=FALSE)
options("getSymbols.yahoo.warning"=FALSE)
getSymbols(c("APH","IBM","CCL","TSS","HSY","COH","QRVO","CMA","RJF","ABBV","SCHW","RTN"), src="yahoo", from="2012-01-01")
```

Row
-------------------------------------
### APH
```{r, fig.height=5}
chartSeries(APH, type="line", subset="last 5 years", TA=NULL)
```

### IBM
```{r, fig.height=5}
chartSeries(IBM, type="line", subset="last 5 years", TA=NULL)
```

### CCL
```{r, fig.height=5}
chartSeries(CCL, type="line", subset="last 5 years", TA=NULL)
```

### TSS
```{r, fig.height=5}
chartSeries(TSS, type="line", subset="last 5 years", TA=NULL)
```

Row
-------------------------------------
### HSY
```{r, fig.height=5}
chartSeries(HSY, type="line", subset="last 5 years", TA=NULL)
```

### COH
```{r, fig.height=5}
chartSeries(COH, type="line", subset="last 5 years", TA=NULL)
```

### QRVO
```{r, fig.height=5}
chartSeries(QRVO, type="line", subset="last 5 years", TA=NULL)
```

### CMA
```{r, fig.height=5}
chartSeries(CMA, type="line", subset="last 5 years", TA=NULL)
```

Row
-------------------------------------
### RJF
```{r, fig.height=5}
chartSeries(RJF, type="line", subset="last 5 years", TA=NULL)
```

### ABBV
```{r, fig.height=5}
chartSeries(ABBV, type="line", subset="last 5 years", TA=NULL)
```

### SCHW
```{r, fig.height=5}
chartSeries(SCHW, type="line", subset="last 5 years", TA=NULL)
```

### RTN
```{r, fig.height=5}
chartSeries(RTN, type="line", subset="last 5 years", TA=NULL)
```

foo. Rmd (with vertical scroll)
---
title: "Semiconductor: 5 years"
output:
  flexdashboard::flex_dashboard:
    vertical_layout: scroll
    orientation: rows
---

```{r setup, include=FALSE}
library(quantmod)
options("getSymbols.warning4.0"=FALSE)
options("getSymbols.yahoo.warning"=FALSE)
getSymbols(c("MTB","IVZ","UAL","MOS","MCK","ADSK","LEG","STT","RMD","EBAY","RF","FIS"), src="yahoo", from="2012-01-01")
```

Row
-------------------------------------
### MTB
```{r}
chartSeries(MTB, type="line", subset="last 5 years", TA=NULL)
```

### IVZ
```{r}
chartSeries(IVZ, type="line", subset="last 5 years", TA=NULL)
```

### UAL
```{r}
chartSeries(UAL, type="line", subset="last 5 years", TA=NULL)
```

### MOS
```{r}
chartSeries(MOS, type="line", subset="last 5 years", TA=NULL)
```

Row
-------------------------------------
### MCK
```{r}
chartSeries(MCK, type="line", subset="last 5 years", TA=NULL)
```

### ADSK
```{r}
chartSeries(ADSK, type="line", subset="last 5 years", TA=NULL)
```

### LEG
```{r}
chartSeries(LEG, type="line", subset="last 5 years", TA=NULL)
```

### STT
```{r}
chartSeries(STT, type="line", subset="last 5 years", TA=NULL)
```

Row
-------------------------------------
### RMD
```{r}
chartSeries(RMD, type="line", subset="last 5 years", TA=NULL)
```

### EBAY
```{r}
chartSeries(EBAY, type="line", subset="last 5 years", TA=NULL)
```

### RF
```{r}
chartSeries(RF, type="line", subset="last 5 years", TA=NULL)
```

### FIS
```{r}
chartSeries(FIS, type="line", subset="last 5 years", TA=NULL)
```

A:

A combination of Row {data-height=200) and  {r, fig.height=3, fig.width=5} and vertical_layout: scroll has solved the issue for me. 
semi. Rmd ...    R -e "rmarkdown::render('semi. Rmd')"
---
title: "Semiconductor: 5 years"
output: 
  flexdashboard::flex_dashboard:
    orientation: rows
    vertical_layout: scroll
---

```{r setup, include=FALSE}
library(quantmod)
# 4 stocks
options("getSymbols.warning4.0"=FALSE)
options("getSymbols.yahoo.warning"=FALSE)
getSymbols(c("INTC","TXN", "QCOM","NVDA","AVGO","STM","AMD","CY","TSM","ADI"), src="yahoo", from="2012-01-01")
```

Row {data-height=200}
-------------------------------------
### Intel
```{r, fig.height=3, fig.width=5}
chartSeries(INTC, type="line", subset="last 5 years", TA=NULL)
```

### Qualcomm
```{r, fig.height=3, fig.width=5}
chartSeries(QCOM, type="line", subset="last 5 years", TA=NULL)
```

### Texas Instruments
```{r, fig.height=3, fig.width=5}
chartSeries(TXN, type="line", subset="last 5 years", TA=NULL)
```

### Broadcom
```{r, fig.height=3, fig.width=5}
chartSeries(AVGO, type="line", subset="last 5 years", TA=NULL)
```

Row {data-height=200}
-------------------------------------
### ST Microelectronics
```{r, fig.height=3, fig.width=5}
chartSeries(STM, type="line", subset="last 5 years", TA=NULL)
```

### AMD
```{r, fig.height=3, fig.width=5}
chartSeries(AMD, type="line", subset="last 5 years", TA=NULL)
```

### Cypress
```{r, fig.height=3, fig.width=5}
chartSeries(CY, type="line", subset="last 5 years", TA=NULL)
```

### NVDA
```{r, fig.height=3, fig.width=5}
chartSeries(NVDA, type="line", subset="last 5 years", TA=NULL)
```

Row {data-height=200}
-------------------------------------
### TSMC
```{r, fig.height=3, fig.width=5}
chartSeries(TSM, type="line", subset="last 5 years", TA=NULL)
```

### Analog Devices
```{r, fig.height=3, fig.width=5}
chartSeries(ADI, type="line", subset="last 5 years", TA=NULL)
```

