我的问题是:
我知道这可能是一个愚蠢的问题...我的R代码在这里:
download.file('https://some.dir,
destfile = '/home/myfile.grb2',method='auto',quiet = FALSE,
mode="wb", cacheOK = TRUE)
下载后,我不得不使用终端代码转换该文件...但我需要这是自动的。转换器代码是这样的:
source activate ncl_stable
cd /home
ncl_convert2nc myfile.grb2
谷歌搜索我看到 Linux终端使用 C ++ 。我知道有一个包运行C ++代码到R, Rcpp ,但它的工作方式与Linux终端类似吗?
答案 0 :(得分:1)
这样可以解决问题:
rgbImage = imread('JjkrL.jpg') ;
%% Remove the white background
grayImage = min(rgbImage, [], 3);
binaryImage = grayImage < 200;
binaryImage = bwareafilt(binaryImage, 1);
[rows, columns] = find(binaryImage);
row1 = min(rows);
row2 = max(rows);
col1 = min(columns);
col2 = max(columns);
% Crop
croppedImage = rgbImage(row1:row2, col1:col2, :);
[nx,ny,t] = size(croppedImage) ;
imshow(croppedImage) ;
%%
% Centers of circles
C1 = [84 142] ;
C2 = [76 136] ;
%% Get distances
% circle 1/ Big circle
% Edge points
top = [C1(1) 1] ;
bottom = [C1(1) nx] ;
left = [1 C1(2)] ;
right = [ny C1(2)] ;
pts = [top ;left ;bottom ; right] ;
hold on
plot(C1(1),C1(2),'*r')
plot(pts(:,1),pts(:,2),'*k') ;
%% Get distances
data = repmat(C1,[length(pts),1])-pts ;
dist = sqrt(data(:,1).^2+data(:,2).^2);