<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">HI,<div><br></div><div>I'm trying to draw some rectangles under a curve. I'm doing something wrong, but not sure what it is, as my rectangles don't show up.</div><div><br></div><div>Any suggestions?</div><div><br></div><div>David.</div><div><br></div><div><pre style="font-family:Lucida Sans Typewriter;font-style:normal;font-size:18.0;"><span style="color:rgb(0,0,0);">a</span><span style="color:rgb(92,92,92);">=</span><span style="color:rgb(188,143,143);">0</span>
<span style="color:rgb(0,0,0);">b</span><span style="color:rgb(92,92,92);">=</span><span style="color:rgb(188,143,143);">2</span>
<span style="color:rgb(0,0,0);">n</span><span style="color:rgb(92,92,92);">=</span><span style="color:rgb(188,143,143);">10</span>
<span style="color:rgb(0,0,0);">h</span><span style="color:rgb(92,92,92);">=</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(0,0,0);">b</span><span style="color:rgb(92,92,92);">-</span><span style="color:rgb(0,0,0);">a</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(92,92,92);">/</span><span style="color:rgb(0,0,0);">n</span>
<span style="color:rgb(0,0,0);">x</span><span style="color:rgb(92,92,92);">=</span><span style="color:rgb(174,92,176);text-decoration:underline;">linspace</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(0,0,0);">a</span><span style="color:rgb(0,0,0);">,</span><span style="color:rgb(0,0,0);">b</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">y</span><span style="color:rgb(92,92,92);">=</span><span style="color:rgb(0,0,0);">x</span><span style="color:rgb(92,92,92);">^</span><span style="color:rgb(188,143,143);">2</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(174,92,176);text-decoration:underline;">plot</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(0,0,0);">x</span><span style="color:rgb(0,0,0);">,</span><span style="color:rgb(0,0,0);">y</span><span style="color:rgb(74,85,219);">)</span>
<span style="color:rgb(0,0,0);">xx</span><span style="color:rgb(92,92,92);">=</span><span style="color:rgb(0,0,0);">a</span><span style="color:rgb(255,170,0);">:</span><span style="color:rgb(0,0,0);">h</span><span style="color:rgb(255,170,0);">:</span><span style="color:rgb(0,0,0);">b</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">yy</span><span style="color:rgb(92,92,92);">=</span><span style="color:rgb(0,0,0);">xx</span><span style="color:rgb(92,92,92);">^</span><span style="color:rgb(188,143,143);">2</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">ww</span><span style="color:rgb(92,92,92);">=</span><span style="color:rgb(0,0,0);">h</span><span style="color:rgb(92,92,92);">*</span><span style="color:rgb(50,185,185);">ones</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(0,0,0);">xx</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">hh</span><span style="color:rgb(92,92,92);">=</span><span style="color:rgb(0,0,0);">xx</span><span style="color:rgb(92,92,92);">^</span><span style="color:rgb(188,143,143);">2</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">rects</span><span style="color:rgb(92,92,92);">=</span><span style="color:rgb(74,85,219);">[</span><span style="color:rgb(0,0,0);">xx</span><span style="color:rgb(0,0,0);">;</span><span style="color:rgb(0,0,0);">yy</span><span style="color:rgb(0,0,0);">;</span><span style="color:rgb(0,0,0);">ww</span><span style="color:rgb(0,0,0);">;</span><span style="color:rgb(0,0,0);">hh</span><span style="color:rgb(74,85,219);">]</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(0,0,0);">col</span><span style="color:rgb(92,92,92);">=</span><span style="color:rgb(188,143,143);">34</span><span style="color:rgb(92,92,92);">*</span><span style="color:rgb(50,185,185);">ones</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(0,0,0);">xx</span><span style="color:rgb(74,85,219);">)</span><span style="color:rgb(0,0,0);">;</span>
<span style="color:rgb(50,185,185);">xrects</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(0,0,0);">rects</span><span style="color:rgb(0,0,0);">,</span><span style="color:rgb(0,0,0);">col</span><span style="color:rgb(74,85,219);">)</span>
</pre></div></body></html>