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<div class="moz-cite-prefix">Compare these two different things<br>
<br>
This<br>
---------------------------<br>
x=[0:0.1:2*%pi]'; <br>
x($), sin(x($)), sin(2*%pi)<br>
ans =<br>
<br>
6.2 <br>
ans =<br>
<br>
- 0.0830894 <br>
ans =<br>
<br>
- 2.449D-16 <br>
----------------------------<br>
and this<br>
---------------------------<br>
x=linspace(0,2*%pi)';<br>
x($), sin(x($)), sin(2*%pi)<br>
ans =<br>
<br>
6.2831853 <br>
ans =<br>
<br>
- 2.449D-16 <br>
ans =<br>
<br>
- 2.449D-16 <br>
----------------------------<br>
$ will give you the index of the last vector element.<br>
Have in mind that colon operator and linspace() work differently.
<br>
<br>
-->0:0.1:0.99<br>
ans =<br>
<br>
0. 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
0.9 <br>
<br>
-->linspace(0,0.99,10)<br>
ans =<br>
<br>
0. 0.11 0.22 0.33 0.44 0.55 0.66 0.77
0.88 0.99 <br>
<br>
Hope this helped.<br>
<br>
Regards,<br>
Radovan<br>
<pre style="font-family:Monospaced;font-style:normal;font-size:13.0;"><span style="color:rgb(74,85,219);">
</span></pre>
On 7/9/2014 8:15 AM, tanthiamhuat wrote:<br>
</div>
<blockquote cite="mid:1404886535714-4030857.post@n3.nabble.com"
type="cite">
<pre wrap="">yes, I understand now. how about second part of the question that
x=[0:0.1:2*%pi]';
y=sin(x);plot(x,y)
why does the above 2 lines give a plot which does not touch the x-axis at
x=2*pi? also, it seems not to be exact at (0,0).
see <a class="moz-txt-link-freetext" href="http://postimg.org/image/4t4pcqub5/">http://postimg.org/image/4t4pcqub5/</a>
--
View this message in context: <a class="moz-txt-link-freetext" href="http://mailinglists.scilab.org/Plotting-why-wrong-values-on-the-x-and-y-axes-tp4030855p4030857.html">http://mailinglists.scilab.org/Plotting-why-wrong-values-on-the-x-and-y-axes-tp4030855p4030857.html</a>
Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com.
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</pre>
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