Esempio: tracciare il grafico di curve 3D

Grafici > Grafici 3D > Esempio: tracciare il grafico di curve 3D

Tracciare il grafico di curve tridimensionali dall'input di una matrice a 3 colonne, una funzione a valore vettoriale o utilizzando la funzione CreateSpace.

Tracciare il grafico di una matrice a tre colonne

1. Definire una matrice con tre colonne utilizzando la funzione casuale.

Fare clic per copiare questa espressione

2. Tracciare il grafico della matrice e modificare l'impostazione Colore traccia.

Per default, il grafico di una matrice a 3 colonne viene tracciato come punti dispersi.

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La prima colonna della matrice rappresenta le coordinate x, la seconda colonna rappresenta le coordinate y e la terza colonna rappresenta le coordinate z.

Tracciare il grafico di una funzione di un singolo parametro

1. Definire una funzione a valore vettoriale di un singolo parametro per creare una curva 3D.

In questa funzione 2*t rappresenta le coordinate x, t rappresenta le coordinate y e sin(t) rappresenta le coordinate z.

2. Inserire un grafico 3D, digitare il nome della funzione nel segnaposto senza i relativi argomenti e modificare le impostazioni Colore traccia e Spessore traccia.

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PTC Mathcad traccia il grafico di una funzione a valore vettoriale di un singolo parametro come curva tridimensionale. Questa è una curva tridimensionale.

L'intervallo dell'asse x è (-20, 20) e quello dell'asse y è (-10, 10).

3. Definire t come variabile con intervallo sul grafico.

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L'intervallo dell'asse y varia da (-10, 10) a (15, 25) e quello dell'asse x varia da (-20, 20) a (30, 50).

Tracciare il grafico dell'output di CreateSpace

1. Utilizzare la funzione incorporata CreateSpace per creare un insieme di dati basato sulla funzione precedente.

2. Tracciare il grafico di M.

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L'intervallo tracciato di default è (-10, 10), con 41 punti griglia.

3. Utilizzare CreateSpace con un intervallo diverso e tracciare il grafico del risultato.

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Il grafico riflette il nuovo intervallo.

4. Utilizzare CreateSpace con un intervallo e un numero di punti griglia diversi, quindi tracciare il grafico del risultato.

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L'intervallo degli assi rimane invariato, ma vengono visualizzati più punti griglia, rendendo la traccia più uniforme.

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