comparison scripts/general/gradient.m @ 14363:f3d52523cde1

Use Octave coding conventions in all m-file %!test blocks * wavread.m, acosd.m, acot.m, acotd.m, acoth.m, acsc.m, acscd.m, acsch.m, asec.m, asecd.m, asech.m, asind.m, atand.m, cosd.m, cot.m, cotd.m, coth.m, csc.m, cscd.m, csch.m, sec.m, secd.m, sech.m, sind.m, tand.m, accumarray.m, accumdim.m, bitcmp.m, bitget.m, bitset.m, blkdiag.m, cart2pol.m, cart2sph.m, celldisp.m, chop.m, circshift.m, colon.m, common_size.m, cplxpair.m, cumtrapz.m, curl.m, dblquad.m, deal.m, divergence.m, flipdim.m, fliplr.m, flipud.m, genvarname.m, gradient.m, idivide.m, int2str.m, interp1.m, interp1q.m, interp2.m, interp3.m, interpft.m, interpn.m, isa.m, isdir.m, isequal.m, isequalwithequalnans.m, issquare.m, logspace.m, nargchk.m, narginchk.m, nargoutchk.m, nextpow2.m, nthargout.m, num2str.m, pol2cart.m, polyarea.m, postpad.m, prepad.m, profile.m, profshow.m, quadgk.m, quadv.m, randi.m, rat.m, repmat.m, rot90.m, rotdim.m, shift.m, shiftdim.m, sph2cart.m, structfun.m, trapz.m, triplequad.m, convhull.m, dsearch.m, dsearchn.m, griddata3.m, griddatan.m, rectint.m, tsearchn.m, __makeinfo__.m, doc.m, get_first_help_sentence.m, help.m, type.m, unimplemented.m, which.m, imread.m, imwrite.m, dlmwrite.m, fileread.m, is_valid_file_id.m, strread.m, textread.m, textscan.m, commutation_matrix.m, cond.m, condest.m, cross.m, duplication_matrix.m, expm.m, housh.m, isdefinite.m, ishermitian.m, issymmetric.m, logm.m, normest.m, null.m, onenormest.m, orth.m, planerot.m, qzhess.m, rank.m, rref.m, trace.m, vech.m, ans.m, bincoeff.m, bug_report.m, bzip2.m, comma.m, compare_versions.m, computer.m, edit.m, fileparts.m, fullfile.m, getfield.m, gzip.m, info.m, inputname.m, isappdata.m, isdeployed.m, ismac.m, ispc.m, isunix.m, list_primes.m, ls.m, mexext.m, namelengthmax.m, news.m, orderfields.m, paren.m, recycle.m, rmappdata.m, semicolon.m, setappdata.m, setfield.m, substruct.m, symvar.m, ver.m, version.m, warning_ids.m, xor.m, fminbnd.m, fsolve.m, fzero.m, lsqnonneg.m, optimset.m, pqpnonneg.m, sqp.m, matlabroot.m, __gnuplot_drawnow__.m, __plt_get_axis_arg__.m, ancestor.m, cla.m, clf.m, close.m, colorbar.m, colstyle.m, comet3.m, contourc.m, figure.m, gca.m, gcbf.m, gcbo.m, gcf.m, ginput.m, graphics_toolkit.m, gtext.m, hggroup.m, hist.m, hold.m, isfigure.m, ishghandle.m, ishold.m, isocolors.m, isonormals.m, isosurface.m, isprop.m, legend.m, line.m, loglog.m, loglogerr.m, meshgrid.m, ndgrid.m, newplot.m, orient.m, patch.m, plot3.m, plotyy.m, __print_parse_opts__.m, quiver3.m, refreshdata.m, ribbon.m, semilogx.m, semilogxerr.m, semilogy.m, stem.m, stem3.m, subplot.m, title.m, uigetfile.m, view.m, whitebg.m, compan.m, conv.m, deconv.m, mkpp.m, mpoles.m, pchip.m, poly.m, polyaffine.m, polyder.m, polyfit.m, polygcd.m, polyint.m, polyout.m, polyval.m, polyvalm.m, ppder.m, ppint.m, ppjumps.m, ppval.m, residue.m, roots.m, spline.m, intersect.m, ismember.m, powerset.m, setdiff.m, setxor.m, union.m, unique.m, autoreg_matrix.m, bartlett.m, blackman.m, detrend.m, fftconv.m, fftfilt.m, fftshift.m, freqz.m, hamming.m, hanning.m, ifftshift.m, sinc.m, sinetone.m, sinewave.m, unwrap.m, bicg.m, bicgstab.m, gmres.m, gplot.m, nonzeros.m, pcg.m, pcr.m, spaugment.m, spconvert.m, spdiags.m, speye.m, spfun.m, spones.m, sprand.m, sprandsym.m, spstats.m, spy.m, svds.m, treelayout.m, bessel.m, beta.m, betaln.m, factor.m, factorial.m, isprime.m, lcm.m, legendre.m, nchoosek.m, nthroot.m, perms.m, pow2.m, primes.m, reallog.m, realpow.m, realsqrt.m, hadamard.m, hankel.m, hilb.m, invhilb.m, magic.m, rosser.m, vander.m, __finish__.m, center.m, cloglog.m, corr.m, cov.m, gls.m, histc.m, iqr.m, kendall.m, kurtosis.m, logit.m, mahalanobis.m, mean.m, meansq.m, median.m, mode.m, moment.m, ols.m, ppplot.m, prctile.m, probit.m, quantile.m, range.m, ranks.m, run_count.m, runlength.m, skewness.m, spearman.m, statistics.m, std.m, table.m, var.m, zscore.m, betacdf.m, betainv.m, betapdf.m, betarnd.m, binocdf.m, binoinv.m, binopdf.m, binornd.m, cauchy_cdf.m, cauchy_inv.m, cauchy_pdf.m, cauchy_rnd.m, chi2cdf.m, chi2inv.m, chi2pdf.m, chi2rnd.m, discrete_cdf.m, discrete_inv.m, discrete_pdf.m, discrete_rnd.m, empirical_cdf.m, empirical_inv.m, empirical_pdf.m, empirical_rnd.m, expcdf.m, expinv.m, exppdf.m, exprnd.m, fcdf.m, finv.m, fpdf.m, frnd.m, gamcdf.m, gaminv.m, gampdf.m, gamrnd.m, geocdf.m, geoinv.m, geopdf.m, geornd.m, hygecdf.m, hygeinv.m, hygepdf.m, hygernd.m, kolmogorov_smirnov_cdf.m, laplace_cdf.m, laplace_inv.m, laplace_pdf.m, laplace_rnd.m, logistic_cdf.m, logistic_inv.m, logistic_pdf.m, logistic_rnd.m, logncdf.m, logninv.m, lognpdf.m, lognrnd.m, nbincdf.m, nbininv.m, nbinpdf.m, nbinrnd.m, normcdf.m, norminv.m, normpdf.m, normrnd.m, poisscdf.m, poissinv.m, poisspdf.m, poissrnd.m, stdnormal_cdf.m, stdnormal_inv.m, stdnormal_pdf.m, stdnormal_rnd.m, tcdf.m, tinv.m, tpdf.m, trnd.m, unidcdf.m, unidinv.m, unidpdf.m, unidrnd.m, unifcdf.m, unifinv.m, unifpdf.m, unifrnd.m, wblcdf.m, wblinv.m, wblpdf.m, wblrnd.m, kolmogorov_smirnov_test.m, kruskal_wallis_test.m, base2dec.m, bin2dec.m, blanks.m, cstrcat.m, deblank.m, dec2base.m, dec2bin.m, dec2hex.m, findstr.m, hex2dec.m, index.m, isletter.m, mat2str.m, rindex.m, str2num.m, strcat.m, strjust.m, strmatch.m, strsplit.m, strtok.m, strtrim.m, strtrunc.m, substr.m, validatestring.m, demo.m, example.m, fail.m, speed.m, addtodate.m, asctime.m, clock.m, ctime.m, date.m, datenum.m, datetick.m, datevec.m, eomday.m, etime.m, is_leap_year.m, now.m: Use Octave coding conventions in all m-file %!test blocks
author Rik <octave@nomad.inbox5.com>
date Mon, 13 Feb 2012 07:29:44 -0800
parents 72c96de7a403
children 5d3a684236b0
comparison
equal deleted inserted replaced
14361:8de863b7126b 14363:f3d52523cde1
218 varargout{d} = df_dx; 218 varargout{d} = df_dx;
219 endif 219 endif
220 endfor 220 endfor
221 endfunction 221 endfunction
222 222
223
223 %!test 224 %!test
224 %! data = [1, 2, 4, 2]; 225 %! data = [1, 2, 4, 2];
225 %! dx = gradient (data); 226 %! dx = gradient (data);
226 %! dx2 = gradient (data, 0.25); 227 %! dx2 = gradient (data, 0.25);
227 %! dx3 = gradient (data, [0.25, 0.5, 1, 3]); 228 %! dx3 = gradient (data, [0.25, 0.5, 1, 3]);
228 %! assert (dx, [1, 3/2, 0, -2]); 229 %! assert (dx, [1, 3/2, 0, -2]);
229 %! assert (dx2, [4, 6, 0, -8]); 230 %! assert (dx2, [4, 6, 0, -8]);
230 %! assert (dx3, [4, 4, 0, -1]); 231 %! assert (dx3, [4, 4, 0, -1]);
231 %! assert (size_equal(data, dx)); 232 %! assert (size_equal (data, dx));
232 233
233 %!test 234 %!test
234 %! [Y,X,Z,U] = ndgrid (2:2:8,1:5,4:4:12,3:5:30); 235 %! [Y,X,Z,U] = ndgrid (2:2:8,1:5,4:4:12,3:5:30);
235 %! [dX,dY,dZ,dU] = gradient (X); 236 %! [dX,dY,dZ,dU] = gradient (X);
236 %! assert (all(dX(:)==1)); 237 %! assert (all (dX(:) == 1));
237 %! assert (all(dY(:)==0)); 238 %! assert (all (dY(:) == 0));
238 %! assert (all(dZ(:)==0)); 239 %! assert (all (dZ(:) == 0));
239 %! assert (all(dU(:)==0)); 240 %! assert (all (dU(:) == 0));
240 %! [dX,dY,dZ,dU] = gradient (Y); 241 %! [dX,dY,dZ,dU] = gradient (Y);
241 %! assert (all(dX(:)==0)); 242 %! assert (all (dX(:) == 0));
242 %! assert (all(dY(:)==2)); 243 %! assert (all (dY(:) == 2));
243 %! assert (all(dZ(:)==0)); 244 %! assert (all (dZ(:) == 0));
244 %! assert (all(dU(:)==0)); 245 %! assert (all (dU(:) == 0));
245 %! [dX,dY,dZ,dU] = gradient (Z); 246 %! [dX,dY,dZ,dU] = gradient (Z);
246 %! assert (all(dX(:)==0)); 247 %! assert (all (dX(:) == 0));
247 %! assert (all(dY(:)==0)); 248 %! assert (all (dY(:) == 0));
248 %! assert (all(dZ(:)==4)); 249 %! assert (all (dZ(:) == 4));
249 %! assert (all(dU(:)==0)); 250 %! assert (all (dU(:) == 0));
250 %! [dX,dY,dZ,dU] = gradient (U); 251 %! [dX,dY,dZ,dU] = gradient (U);
251 %! assert (all(dX(:)==0)); 252 %! assert (all (dX(:) == 0));
252 %! assert (all(dY(:)==0)); 253 %! assert (all (dY(:) == 0));
253 %! assert (all(dZ(:)==0)); 254 %! assert (all (dZ(:) == 0));
254 %! assert (all(dU(:)==5)); 255 %! assert (all (dU(:) == 5));
256 %! assert (size_equal (dX, dY, dZ, dU, X, Y, Z, U));
257 %! [dX,dY,dZ,dU] = gradient (U, 5.0);
258 %! assert (all (dU(:) == 1));
259 %! [dX,dY,dZ,dU] = gradient (U, 1.0, 2.0, 3.0, 2.5);
260 %! assert (all (dU(:) == 2));
261
262 %!test
263 %! [Y,X,Z,U] = ndgrid (2:2:8,1:5,4:4:12,3:5:30);
264 %! [dX,dY,dZ,dU] = gradient (X+j*X);
265 %! assert (all (dX(:) == 1+1j));
266 %! assert (all (dY(:) == 0));
267 %! assert (all (dZ(:) == 0));
268 %! assert (all (dU(:) == 0));
269 %! [dX,dY,dZ,dU] = gradient (Y-j*Y);
270 %! assert (all (dX(:) == 0));
271 %! assert (all (dY(:) == 2-j*2));
272 %! assert (all (dZ(:) == 0));
273 %! assert (all (dU(:) == 0));
274 %! [dX,dY,dZ,dU] = gradient (Z+j*1);
275 %! assert (all (dX(:) == 0));
276 %! assert (all (dY(:) == 0));
277 %! assert (all (dZ(:) == 4));
278 %! assert (all (dU(:) == 0));
279 %! [dX,dY,dZ,dU] = gradient (U-j*1);
280 %! assert (all (dX(:) == 0));
281 %! assert (all (dY(:) == 0));
282 %! assert (all (dZ(:) == 0));
283 %! assert (all (dU(:) == 5));
255 %! assert (size_equal(dX, dY, dZ, dU, X, Y, Z, U)); 284 %! assert (size_equal(dX, dY, dZ, dU, X, Y, Z, U));
256 %! [dX,dY,dZ,dU] = gradient (U, 5.0); 285 %! [dX,dY,dZ,dU] = gradient (U, 5.0);
257 %! assert (all(dU(:)==1)); 286 %! assert (all (dU(:) == 1));
258 %! [dX,dY,dZ,dU] = gradient (U, 1.0, 2.0, 3.0, 2.5); 287 %! [dX,dY,dZ,dU] = gradient (U, 1.0, 2.0, 3.0, 2.5);
259 %! assert (all(dU(:)==2)); 288 %! assert (all (dU(:) == 2));
260
261 %!test
262 %! [Y,X,Z,U] = ndgrid (2:2:8,1:5,4:4:12,3:5:30);
263 %! [dX,dY,dZ,dU] = gradient (X+j*X);
264 %! assert (all(dX(:)==1+1j));
265 %! assert (all(dY(:)==0));
266 %! assert (all(dZ(:)==0));
267 %! assert (all(dU(:)==0));
268 %! [dX,dY,dZ,dU] = gradient (Y-j*Y);
269 %! assert (all(dX(:)==0));
270 %! assert (all(dY(:)==2-j*2));
271 %! assert (all(dZ(:)==0));
272 %! assert (all(dU(:)==0));
273 %! [dX,dY,dZ,dU] = gradient (Z+j*1);
274 %! assert (all(dX(:)==0));
275 %! assert (all(dY(:)==0));
276 %! assert (all(dZ(:)==4));
277 %! assert (all(dU(:)==0));
278 %! [dX,dY,dZ,dU] = gradient (U-j*1);
279 %! assert (all(dX(:)==0));
280 %! assert (all(dY(:)==0));
281 %! assert (all(dZ(:)==0));
282 %! assert (all(dU(:)==5));
283 %! assert (size_equal(dX, dY, dZ, dU, X, Y, Z, U));
284 %! [dX,dY,dZ,dU] = gradient (U, 5.0);
285 %! assert (all(dU(:)==1));
286 %! [dX,dY,dZ,dU] = gradient (U, 1.0, 2.0, 3.0, 2.5);
287 %! assert (all(dU(:)==2));
288 289
289 %!test 290 %!test
290 %! x = 0:10; 291 %! x = 0:10;
291 %! f = @cos; 292 %! f = @cos;
292 %! df_dx = @(x) -sin (x); 293 %! df_dx = @(x) -sin (x);