从较大大小的数组中创建特定大小的数组 - 平均值

时间:2014-04-01 09:24:52

标签: matlab

我想找到元素(x)和元素(x + 1)之间数组的平均值

 for val = 1: xMid_p-1
     eapDia_p = diaArray_p(1,val);
     baseDia_p = diaArray_p(1,end);
     curDiaArray_p = linspace(eapDia_p, baseDia_p, xMid_p-1);
     curRadArray_p = curDiaArray_p/2;
     maxRad = max(curRadArray_p);

     for val = 1 : xMid_p-1
         ln(1,val) = maxRad(:) - curRadArray_p(val);
         lnE(1,val) = ln(1,val).^3;
         presAn(1,val)= acos(((refDia_p/2)*cos(refPresAng_p))./curRadArray_p(val));
         arcToo(1,val) = 2 * curRadArray_p(val)*((twRefDia_p/refDia_p)+(tan(refPresAng_p)-refPresAng_p)-(tan(presAn(1,val))-presAn(1,val)));
         chor(1,val) = 2 * curRadArray_p(val) * sin(arcToo(1,val)/(curRadArray_p(1,val)*2));

         for val =  1 : xMid_p - 2
             lnM(1,val) = maxRad(:) - curRadArray_p(val);
             lnME(1,val)=lnM(1,val).^3;

         end

     end 

      lnCubed(1,:) = ln.^3;
      lnMCubed(1,:) = lnM.^3;
      lnEq = lnCubed(2:end) - lnMCubed;

 end

请参阅chor(1,val),这将给出值:

 chor =
      1    2    3    4    5    6    7    8

我想找到平均chor,因此数组将是一个较小的元素并将给出结果

 aveChor =
     1.5    2.5   3.5    4.5    5.5    6.5   7.5

1 个答案:

答案 0 :(得分:1)

使用indexing -

的一种方法
aveChor = (chor(2:end) + [chor(1:end-1)])/2

使用diff -

的另一种方法
aveChor = (2*chor(1:end-1) + diff(chor))/2