4-3 ?面顏色?控??

Q colorbar OAi MATLAB pHPCӥNסAҦpYJupeaksvAAJucolorbarvANiHoUCϧΡG

Example 1: 04-Tø/colorbar01.mpeaks; colorbar; z = 3*(1-x).^2.*exp(-(x.^2) - (y+1).^2) ... - 10*(x/5 - x.^3 - y.^5).*exp(-x.^2-y.^2) ... - 1/3*exp(-(x+1).^2 - y.^2)

pWϩҥܡAcolorbar iHܰ׻PC⪺ӪϡAӦWC@ӤpCYھڦӹϦӱoXCƹWACPתYOѤ@ӡuCv]ColormapA²١uvΡuLv^ӱAO@ m3 x}Am ȳq`O 64ANuΨ쪺CӼơAӨC@CN@C⪺ RGB ȡA@DZ`ΪȥiCpUG

CRed]^Green]^Blue]Ŧ^
black]¡^ 0 0 0
white]ա^ 1 1 1
red]^ 1 0 0
green]^ 0 1 0
blue]š^ 0 0 1
yellow]^ 1 1 0
magenta]^ 1 0 1
cyan]Cš^ 0 1 1
gray]ǡ^ 0.5 0.5 0.5
dark red]t^ 0.5 0 0
copper]ɦ^ 1 0.62 0.4
aquamarine]Ѻ^ 0.49 1 0.83

MATLAB w]Ci colormap oApUG

Example 2: 04-Tø/colormap01.mcm=colormap; size(cm) ans = 64 3

ѤWi cm O@ 643 x}A] MATLAB beϮɡA| cm Ĥ@CC]w̰IA cm ̫@CC]w̧CIAlתCh̽uʤkӨMwC]Aڭ̥unCAYio줣PC⪺CCA]O colormap OApUG

Example 3: 04-Tø/plotxyz13.mpeaks; colormap(rand(64,3)); colorbar; z = 3*(1-x).^2.*exp(-(x.^2) - (y+1).^2) ... - 10*(x/5 - x.^3 - y.^5).*exp(-x.^2-y.^2) ... - 1/3*exp(-(x+1).^2 - y.^2)

bWzdҤAڭ̨ϥζüƨӲͤ@ 643 CA]ݰ_ӨäOܽ߮ءCƹWAnͤ@ӦnݪCäOeơA] MATLAB @Dz{CAzpUG

O
colormap hsv HSV C]w]ȡ^
colormap hot NC
colormap cool NNC
colormap summer NLѡC
colormap gray NǶC
colormap copper Nɦ⡨C
colormap autumn NѡC
colormap winter NVѡC
colormap spring NKѡC
colormap bone NXC
colormap pink NC
colormap flag NXmC

ҦpAnϱzϥηPıNCAiJpUG

Example 4: 04-Tø/plotxyz14.mpeaks; colormap cool; colorbar z = 3*(1-x).^2.*exp(-(x.^2) - (y+1).^2) ... - 10*(x/5 - x.^3 - y.^5).*exp(-x.^2-y.^2) ... - 1/3*exp(-(x+1).^2 - y.^2)

FHרӳ]wC⤧~Asurf mesh OiH 4 ӿJ޼ƨӧ@]wC⪺̾ڡCҦpAYnHײv]YuסvΡuGradientv^ӳ]wCAiipUG

Example 5: 04-Tø/plotxyz15.m[X, Y, Z] = peaks; surf(X, Y, Z, gradient(Z)); axis tight; colormap hot

bWҤAgradient (Z) |ھڼƭȷL]Numerical Differentiation^Ӳͯx} Z סAsurf YQΦרӲͦCC gradient ԲӸTAib MATLAB OUJ help gradientC

YnHvӳ]wCAiipUG

Example 6: 04-Tø/plotxyz16.m[X, Y, Z] = peaks; surf(X, Y, Z, del2(Z)); axis tight; colormap hot

bWҤAdel2 (Z) ھڼƭȷLӲͯx} Z discrete LaplacianAԱiѨ help del2 Ǧ^uW䴩C

ڭ̥i brighten OӨCӪܫGܷtApUG

Example 7: 04-Tø/plotxyz17.mcolormap copper subplot(3, 1, 1); rgbplot(colormap); brighten(colormap, 0.5) subplot(3, 1, 2); rgbplot(colormap); brighten(colormap, -0.8) subplot(3, 1, 3); rgbplot(colormap);

䤤 rgbplot ieX RBGBB T⪺񭫹CƪܤơC

Wz MATLAB MwC⪺k٬uCv]Indexed Color^kA]WCӤCޡ]YY@SwC^AAѦCMwunΪCCpGzܾ䴩 24 줸mAhڭ̥iHwq@dʸU]224^CAӤݭnAwqCCؤk٬uuCv]True Color^kApUG

Example 8: 04-Tø/plotxyz18.mZ = peaks(50); C(:, :, 1) = rand(50); % C(:,:,1) N R]RedA^q C(:, :, 2) = rand(50); % C(:,:,2) N G]GreenA^q C(:, :, 3) = rand(50); % C(:,:,3) N B]BlueAŦ^q surf(Z, C); axis tight

bWϤAWC@ӤpCⳣOѯx} C RBGBB qӨMwAoNOuuCvAөMezuCvҤPC

bezҤlAC@ӦiHѤ@|pujvҫAӥBC@ujvCOä@PACȥѡujvҦbשҨMwCYnϡujvCⲣͳsʪܤơAiϥ shading OAҦpڭ̥iHJupeaksvAAJushading interpvANiHoUCC⺥iܤƪϧΡG

Example 9: 04-Tø/shadingInterp01.mpeaks; colormap jet; colorbar; shading interp; z = 3*(1-x).^2.*exp(-(x.^2) - (y+1).^2) ... - 10*(x/5 - x.^3 - y.^5).*exp(-x.^2-y.^2) ... - 1/3*exp(-(x+1).^2 - y.^2)

ѤWϥiݥXAg shading interp @ΡAC[XơC shading OΪkAiCpUG

O
shading interp ϥ Bilinear Interpolation Өϡujvھڥ|ICⲣͳsܤ
shading flat ujvCOä@PC
shading faceted ujvCOä@PAӥBPܡujv汵uvC]w]ȡ^

ϥ colormap shadingAiͷNQ쪺GAҦpG

Example 10: 04-Tø/plotxyz19.msurfl(peaks); % ϥ[W axis tight colormap(pink); shading interp

WϪAO_ܹ@ƵL媺J~OHI


MATLAB{]pGJg