So, if you have a gradient field, it's what's called conservative.
如果有一个梯度场,它也是一个保守场。
As you can see, I used a gradient map for the stem and curly leaves.
正如你看到的,我为植物的茎和卷曲的叶子使用了一张渐变贴图。
The question is for which value of a is this going to be possibly a gradient?
问题是a为多少时,这才可能是个梯度场?
One is to say that the vector field is a gradient in a certain region of a plane.
一个是向量场,在给定平面区域内是梯度场。
And, of course, it is not a coincidence because this vector field is a gradient field.
当然这并非巧合,因为这个向量场是有势场。
But it portrays how to get a gradient effect which is what I wanted.
但它描绘如何获得渐变效果,这就是我想要的。
An object that specifies a mapping between color column values and colors or a gradient scale.
一个对象,它指定列的颜色值和颜色或渐变刻度之间的映射。
It changes things quite a bit, however, when it comes to testing whether a field is a gradient field.
然而,当考虑到一个场是否是一个有势场时,它有极大的影响。
Give it a gradient overlay that starts with a shade of blue and fades down to a darker shade of blue.
添加渐变叠加效果,渐变有蓝色开始,淡入到深蓝。
The idea is that anywhere in the cylinder, the cloud particles will have a gradient from top to bottom.
这样做的目的在于使圆柱中任何地方的粒子都有一个从上到下的渐变。
If we have a vector field that cannot possibly be a gradient then we shouldn't try to look for a potential.
如果一个向量场不可能是梯度场,那我们就不应该尝试去找势函数。
This style is set to reflect the heading five pixels below it, with a gradient effect applied to the reflection.
设置这个样式以在标题下方5个像素处反射标题,并对倒影应用一个渐变效果。
Contour furrows overcome this problem because they are placed on a gradient of about 0.5 % across the main slope.
等高沟克服了这个问题,因为这些沟垂直于主坡方向布置,沟道坡度约为0.5%。
Well, if we know that it's a gradient field, that we've seen that we get these properties out of the fundamental theorem.
如果我们知道它是一个梯度场,就可以由基本定理,得到上面那些性质。
Hide the edges smoothly using a gradient mask. Pick the gradient Tool, create the below gradient in the Options Panel.
使用渐变遮罩使边缘平稳地消失。选择渐变工具,在选项面板中创建下面的渐变。
Firstly, a gradient operator based on local standard deviation is performed and potential edge regions are well separated.
首先提出了一种基于标准差的梯度算子,将图像中潜在的边缘区域很好地区分出来;
Finally add a gradient to the sidebar spanning from white to the light grey background to add a little interest and dimension.
最后在侧边栏上添加一个从白色到灰色的渐变来增加些细节和层次。
And, basically, we say that these properties are equivalent being a gradient field or being path independent or being conservative.
根本上说,以下性质是等价的,一个向量场是梯度场,等价于积分与路径无关,也等价于向量场是保守的。
Ok, so just to reinforce my warning that not every field is a gradient field, let's look again at our favorite vector field from yesterday.
好的,为了强调,不是所有场都是梯度场,我们再来看看昨天那个向量场。
Now, if I rotate, the the slope sort of increases, increases, increases, and it becomes the largest when I'm going in the direction of a gradient.
如果旋转的话,那么斜率会变大,变大,变大,当和梯度方向一致时,它达到最大值。
As we have SWT widgets inside our shell and we intend to use a gradient background on the shell itself, all the widgets need to be transparent.
由于我们的SWT组件在shell内部并且我们打算对shell本身使用渐变背景,所有的组件都必须是透明的。
Set your Foreground color to #00315C and Background to #001B32 and choose the Gradient Tool (G) with a gradient type option set to Radial Gradient.
设置前景色为 #00315C ,背景色为 #001B32 ,然后选择渐变工具(G),渐变类型为径向渐变。
So, actually on Tuesday we'll see how to decide whether a vector field is a gradient or not, and if it is a gradient, how to find the potential function.
周二我们就知道,怎样确定一个场是不是梯度,如果确实是梯度的话,怎样算出势函数。
The interior has been crafted with custom terrazzo panels that form a gradient from white to blue with the idea of adding a Miami flavor to the space.
室内用定制的水磨石板制作,从白色到蓝色形成一种渐变,为空间添加迈阿密风格。
First, a study of a sliding mode controller under on off training is made and then the on line learning algorithm using a gradient decent method is designed.
首先研究了离线训练的滑模控制器,然后,给出了利用梯度下降法的在线训练方法。
The color of each bar is based on the value of the %MISS column (see Table 2), with a gradient moving from red (100%) through yellow (50%) and finally on to green (0%).
每个条状图形的颜色基于 %MISS列的值(参见表2),从红色 (100%) 逐渐过渡到黄色 (50%),并且最终变为绿色 (0%)。
Well, we've seen this criterion that if a curl of the vector field is zero and it's defined in the entire plane, then the vector field is conservative, and it's a gradient field.
我们已经知道了一个准则,如果向量场的旋度为零,而且它在整个平面上有定义,那么这个向量场是保守的,而且它是个梯度场。
Through embedding a gradient descend operator into the generic algorithm, a hybrid algorithm is achieved with fast convergence and great probability for global optimization.
在遗传算法中嵌入一个梯度下降算子,使得混合算法既有较快的收敛性,又能以较大概率得到全局极值。
OK, so, we've seen that if we have a vector field defined in a simply connected region, and its curl is zero, then it's a gradient field, and the line integral is path independent.
一个向量场,如果定义在单连通区域并且旋度为零,那么它就是一个梯度场,并且其上的线积分与路径无关。
The fill() method closes any subpaths and then fills each subpath in turn using fillStyle (which can be a color, or, as discussed later, a gradient object) to determine how to draw the fill.
fill()方法使所有子路径封闭起来,然后逐个填充每个子路径,期间使用fillStyle (一种颜色,或一个渐变对象)来决定如何绘制填充。
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