Kuxazululiwe: ungasetha kanjani usayizi wesibalo ukuze ubone isakhiwo

Ukwenza itulo eMatlab kuwumsebenzi ovamile kodwa obalulekile wezinhlelo zokusebenza ezihlukahlukene. Isici esisodwa esibalulekile sokuthuthukisa ukufundeka nokuchazwa kwesakhiwo ukulungiselelwa okufanele kosayizi wesibalo. Isibalo esikalwe kahle sivumela ukuqondwa kalula kwedatha kanye nemininingwane yayo, kuthuthukise ukuxhumana okusebenzayo komsebenzi wocwaningo. Inkinga yokulinganisa isibalo ngendlela efanele ivamise ukunganakwa, okuholela ekuhlanekeni kwedatha. Ngakho-ke lesi sihloko sihlose ukubhekana nalolu daba eMatlab, sinikeza umhlahlandlela wesinyathelo ngesinyathelo sendlela yokusetha usayizi wesibalo ukuze ukwazi ukubona isakhiwo ngokucacile.

% Set a random seed
rng(0)

% Create random data
x = randn(100, 1);
y = 1.2 * x + randn(100, 1);

% Create figure and axes objects
figure('Units', 'inches', 'Position', [0 0 6 4]);
plot(x, y, '.');

% Label the axes
xlabel('X-axis');
ylabel('Y-axis');

Ibhulokhi yekhodi engenhla iyisibonelo esiyisisekelo lapho kucaciswe khona iyunithi 'amayintshi', kanye nesibalo esingamayintshi angu-6ร—4 senziwa esakhiweni.

Incazelo Eningiliziwe Yekhodi

Isinyathelo sokuqala kule nqubo ukudalwa kwedatha edingekayo. Esibonelweni sethu, sisebenzisa idatha ekhiqizwe ngokungahleliwe sisebenzisa umsebenzi we-'randn' kaMatlab. Ukulandela lokhu, sakha izinto zezibalo nezimbazo. Sisho 'amayunithi' ngokuthi 'amayintshi' futhi 'indawo' isethwe ukuze ithi [0 0 6 4], imele isakhiwo esingu-6ร—4 amayintshi. Amachashazi '.' kumsebenzi 'wesakhiwo' ubonisa amaphuzu edatha ngefomethi yesakhiwo se-scatter. Ukulebula izimbazo kwenziwa kusetshenziswa imisebenzi ye-'xlabel' kanye 'ne-ylabel'.

Kubhulokhi yekhodi, 'Amayunithi' ayiguquki ebalulekile njengoba isetha amayunithi lapho kuchazwa usayizi wesibalo nendawo. Okuguquguqukayo 'kwendawo' kuyivekhtha yezinto ezine echaza usayizi nendawo yesibalo. Imelwe njengokuthi [ubude bobubanzi obuphansi kwesokunxele] lapho 'kwesokunxele' kanye 'naphansi' kuyibanga ukusuka emaphethelweni angakwesokunxele nangaphansi kwesikrini futhi 'ububanzi' kanye 'nobude' kusetha usayizi wesithombe.

Imitapo yolwazi yeMatlab ehilelekile

IMatlab inikeza abasebenzisi imitapo yolwazi ehlukahlukene engakhipha izinhlobo ezahlukene zeziza. Ngokwesibonelo, ezinye ezisetshenziswa ngokuvamile zihlanganisa:

  • The 'icebo' function, esetshenziselwa ukwakha iziqephu ze-xy eziyisisekelo.
  • Umsebenzi 'westem' unikeza indlela elula yokudala iziqephu zesiqu.
  • 'i-histogram' isiza ekudaleni iziza ze-histogram.
  • Imisebenzi efana 'nebha' kanye 'nophayi' isetshenziselwa ukudala ibha kanye namashadi ophaya ngokulandelana.

Abasebenzisi beMatlab bawusebenzisa kakhulu umsebenzi 'wesakhiwo', ngenxa yokuguquguquka kwawo kanye nokusebenziseka kalula. Ngakho-ke, ukusetha usayizi wesibalo esifanele ukuthuthukisa ukufundeka kwesakhiwo kuyisici esibalulekile noma yimuphi umsebenzisi weMatlab okufanele asiqaphele.

Izinkinga Ezifanayo Ekuhleleni

Ngaphandle kokulinganisa inani, kunezinye izinkinga abasebenzisi abangabhekana nazo ngenkathi benza iziza eMatlab. Lokhu kungase kube njengokusetha isikali esifanele, ukugcina amamajini afanele, ukubeka imibala efanele nomaka, nokuqinisekisa isitayela nobubanzi bomugqa olungile. Konke lokhu kuyizici ezibalulekile ekuqinisekiseni isakhiwo sekhwalithi ephezulu, esifundekayo. Ukuqonda ukuthi lezi zinhlaka zisebenza kanjani ekulolongeni ukumelwa kwedatha kungasiza kakhulu ekucwengiseni amakhono omuntu ekuhlelweni kwe-Matlab.

Kusukela ekuboneni amasethi edatha alula kuye kudatha eyinkimbinkimbi ye-multi-dimensional, iMatlab inikeza intaphane yamathuluzi ukusiza ekumeleleni okusebenzayo kwesithombe kwedatha. Ngakho-ke, ukuqonda lezi zakhi, okuhlanganisa nemininingwane yokusetha usayizi wesibalo ngendlela efanele, kubalulekile ekumeleleni ngempumelelo idatha nasekuxhumaneni. Ngakho-ke, kwethenjwa ukuthi umhlahlandlela onikeziwe wokuthi ungasetha kanjani usayizi wesibalo ekuhlelweni kwe-Matlab uwusizo kubafundi bawo.

Okuthunyelwe okuhlobene:

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