Undefined unary operator '-' for input arguments of type 'string error
조회 수: 1 (최근 30일)
이전 댓글 표시
I am going to show x axis in scatter plot by text label like below with positive and negative signs however I get this error
"Undefined unary operator '-' for input arguments of type 'string' "
Can someone please assist in rectifying?
n= ["-240-260";"-220-240";"-200-220";"-180-200";"-160-180";"-140-160";"-120-140";"-100-120";"-80-100";"-60-80";"-40-60";"-20- 40";"0-20";"0+20";"+20+40";"+40+60";"+60+80";"+80+100";"+100+120";"+120+140";"+140+160";"+160+180";"+180+200";"+200+220";"+220+240"];
y1 = [0,0,0,0,0,0,0,0,0,0,0,0.04,0.32,0.56,0.08,0,0,0,0,0,0,0,0,0,0];
y2 = [0,0.05,0.05,0.05,0,0.1,0,0,0.2,0.3,0.1,0.1,0.05,0,0,0,0,0,0,0,0,0,0,0,0];
x=categorical(n);
plot(x,y1,'r--o', x,y2,'k--o');
댓글 수: 5
채택된 답변
Steven Lord
2020년 7월 7일
When you call categorical with one input, the list of categories in that categorical is the sorted unique values in the input. From the documentation page:
"B = categorical(A) creates a categorical array from the array A. The categories of B are the sorted unique values from A."
Call categorical with two inputs to keep the categories in your desired order.
"B = categorical(A,valueset) creates one category for each value in valueset. The categories of B are in the same order as the values of valueset"
x = categorical(n, n);
plot(x,y1,'r--o', x,y2,'k--o');
추가 답변 (1개)
Alan Stevens
2020년 7월 7일
Why not just:
y1 = [0,0,0,0,0,0,0,0,0,0,0,0.04,0.32,0.56,0.08,0,0,0,0,0,0,0,0,0,0];
y2 = [0,0.05,0.05,0.05,0,0.1,0,0,0.2,0.3,0.1,0.1,0.05,0,0,0,0,0,0,0,0,0,0,0,0];
x=-250:20:230;
plot(x,y1,'r--o', x,y2,'k--o');
This plots the "y" points in the middle of your "x" bands.
댓글 수: 2
참고 항목
카테고리
Help Center 및 File Exchange에서 Discrete Data Plots에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!