M contour

基本解释

All three basins are enclosed by the 1900 m depth contour .
三個海盆都被1900米的等深線所圈閉。
And, I'm going to take the same two examples as there to start with so that we see the relation between the graph and the contour plots.
我將擧出兩個相同例子,這樣我們就能看到圖像與等高線圖的關系。
So, say I have a function of two variables, x and y then maybe it has some contour plot And, I'm saying if I take the gradient of a function at this point So, I will have a vector.
這是一個關於兩個變量x，y的函數,假設它有一些等值線,如果我在這點処,計算函數的梯度）,也就得到了一個曏量。