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20 lines
707 B
20 lines
707 B
#
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# Copyright 2022 Philipp Schönberger - mail@phschoen.de
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# See <http://www.gnu.org/licenses/>.
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xf = [0:0.05:10];
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yf = sin (2*pi*xf/5);
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xp = [0:10];
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yp = sin (2*pi*xp/5);
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lin = interp1 (xp, yp, xf);
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near = interp1 (xp, yp, xf, "nearest");
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pch = interp1 (xp, yp, xf, "pchip");
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spl = interp1 (xp, yp, xf, "spline");
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plot (xf,yf,"r", xf,near,"g", xf,lin,"b", xf,pch,"c", xf,spl,"m",
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xp,yp,"r*");
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legend ("original", "nearest", "linear", "pchip", "spline");
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