matlab - 具有多个标记的散点图

Question

我正在尝试将来自多个数据文件的散点图放在一起，以查看它们之间的相关性。代码如下所示：

hold all
fia = fopen('data.txt');
A = fscanf(fia, '%f %f %f', [3 inf]);
t = A(1,:);
a = A(2,:);
r = A(3,:);

figure(1)
scatter(log(r),log(a),'r', '-');

fclose(fia);

fia = fopen('data.txt');
A = fscanf(fia, '%f %f %f', [3 inf]);
t = A(1,:);
a = A(2,:);
r = A(3,:);

figure(2);
scatter(log(r),log(a), 'g', '-');

fclose(fia);

依此类推，下一个数据点绘制在同一张图上：

fia = fopen('data.txt');
A = fscanf(fia, '%f %f %f', [3 inf]);
t = A(1,:);
a = A(2,:);
r = A(3,:);

figure(1);
scatter(log(r),log(a), 'rx');


fclose(fia);

等等。

但是当我在 Matlab 中运行该函数时，我得到了这个错误：

Error using specgraph.scattergroup/set
The name 'linestyle' is not an accessible property for an instance
of class 'scattergroup'.

Error in specgraph.scattergroup (line 26)
  set(h,args{:});

Error in scatter (line 83)
        h = specgraph.scattergroup('parent',parax,'cdata',c,...

Error in Ratioincrease (line 11)
scatter(log(r),log(a),'r', '-');

我怎样才能让 scattergroup 类似于线组，就像我如何正确编写它一样？

Answer 1

scatter使用和显示不同的标记应该没有问题。例如：

load seamount
scatter(x,y,30,z,'s'); hold on
scatter(.999*x,1.001*y,30,z,'x'); hold on
scatter(1.001*x,.999*y,30,z,'+'); hold on

我怀疑您有错字并用作-标记类型。您可以使用的标记类型是：

• '+' 加号
• 'o' 圆圈
• '*' 星号
• '.' 观点
• 'x' 叉
• 'square'或's' 正方形
• 'diamond'或'd'钻石
• '^' 向上的三角形
• 'v' 向下三角形
• '>' 指向右边的三角形
• '<' 向左三角形
• 'pentagram'或'p'五角星（五角星）
• 'hexagram'或'h' 六角星（六角星）

Answer 2

Just to add that you don't have to write 'hold on' for each line. Once will be sufficient. So, for this you can write:

load seamount
scatter(x,y,30,z,'s'); hold on
scatter(.999*x,1.001*y,30,z,'x'); 
scatter(1.001*x,.999*y,30,z,'+'); 

Also, if you wanna draw a new set of data and clean the previous, you need to write 'hold off' once before doing this command.

Answer 3

scattergroup 属性名称是 'marker'

签入文档'Scattergroup Properties'