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Replacing substring not working

조회 수: 40 (최근 30일)
ludolfusexe
ludolfusexe 2024년 5월 27일 8:41
댓글: ludolfusexe 2024년 5월 27일 10:04
Why isn't this working?
toBeChanged = "\dot{h}_j(\phi_j,x,y) = \delta _{u}-\delta _{l}\,{\mathrm{e}}^{-\frac{{\left(q_{\mathrm{jx}}-x\right)}^2+{\left(q_{\mathrm{jy}}-y\right)}^2}{2\,\sigma ^2}}\,\phi_j";
toBeRemoved = "{\mathrm{e}}^{-\frac{{\left(p_{\mathrm{jx}}-x\right)}^2+{\left(p_{\mathrm{jy}}-y\right)}^2}{2\,\sigma ^2}}";
isContained = contains(toBeChanged,toBeRemoved)
isContained = logical
0
newString = replace(toBeChanged, toBeRemoved,"{h(p,q_j)}");
Doing this with other smaller strings works just fine.
  댓글 수: 2
Mathieu NOE
Mathieu NOE 2024년 5월 27일 9:42
you made a slight error when doing the copy paste ...
toBeChanged contains left(q_
and
toBeRemoved contains left(p_
if you make the correction , it works
toBeChanged = "\dot{h}_j(\phi_j,x,y) = \delta _{u}-\delta _{l}\,{\mathrm{e}}^{-\frac{{\left(q_{\mathrm{jx}}-x\right)}^2+{\left(q_{\mathrm{jy}}-y\right)}^2}{2\,\sigma ^2}}\,\phi_j";
toBeRemoved = "{\mathrm{e}}^{-\frac{{\left(q_{\mathrm{jx}}-x\right)}^2+{\left(q_{\mathrm{jy}}-y\right)}^2}{2\,\sigma ^2}}";
isContained = contains(toBeChanged,toBeRemoved)
isContained = logical
1
newString = replace(toBeChanged, toBeRemoved,"{h(p,q_j)}")
newString = "\dot{h}_j(\phi_j,x,y) = \delta _{u}-\delta _{l}\,{h(p,q_j)}\,\phi_j"
ludolfusexe
ludolfusexe 2024년 5월 27일 10:04
Wow, definitely needed a break, thank you!

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채택된 답변

Chunru
Chunru 2024년 5월 27일 10:00
toBeChanged = "\dot{h}_j(\phi_j,x,y) = \delta _{u}-\delta _{l}\,{\mathrm{e}}^{-\frac{{\left(q_{\mathrm{jx}}-x\right)}^2+{\left(q_{\mathrm{jy}}-y\right)}^2}{2\,\sigma ^2}}\,\phi_j";
% | |
toBeRemoved = "{\mathrm{e}}^{-\frac{{\left(p_{\mathrm{jx}}-x\right)}^2+{\left(p_{\mathrm{jy}}-y\right)}^2}{2\,\sigma ^2}}";
s1 = extractAfter(toBeChanged, "\delta _{l}\,");
n = strlength(toBeRemoved);
s1 = char(s1); s2 = char(toBeRemoved);
i1 = int16(s1(1:n)); i2 = int16(s2)
i2 = 1x106
123 92 109 97 116 104 114 109 123 101 125 125 94 123 45 92 102 114 97 99 123 123 92 108 101 102 116 40 112 95
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
idx = find(i1 ~= i2)
idx = 1x2
29 64
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
s1(idx)
ans = 'qq'
s2(idx)
ans = 'pp'
isContained = contains(toBeChanged,toBeRemoved)
isContained = logical
0
toBeChanged = "\dot{h}_j(\phi_j,x,y) = \delta _{u}-\delta _{l}\,{\mathrm{e}}^{-\frac{{\left(q_{\mathrm{jx}}-x\right)}^2+{\left(q_{\mathrm{jy}}-y\right)}^2}{2\,\sigma ^2}}\,\phi_j"
toBeChanged = "\dot{h}_j(\phi_j,x,y) = \delta _{u}-\delta _{l}\,{\mathrm{e}}^{-\frac{{\left(q_{\mathrm{jx}}-x\right)}^2+{\left(q_{\mathrm{jy}}-y\right)}^2}{2\,\sigma ^2}}\,\phi_j"
toBeRemoved = "{\mathrm{e}}^{-\frac{{\left(q_{\mathrm{jx}}-x\right)}^2+{\left(q_{\mathrm{jy}}-y\right)}^2}{2\,\sigma ^2}}"
toBeRemoved = "{\mathrm{e}}^{-\frac{{\left(q_{\mathrm{jx}}-x\right)}^2+{\left(q_{\mathrm{jy}}-y\right)}^2}{2\,\sigma ^2}}"
isContained = contains(toBeChanged,toBeRemoved)
isContained = logical
1
newString = replace(toBeChanged, toBeRemoved,"{h(p,q_j)}")
newString = "\dot{h}_j(\phi_j,x,y) = \delta _{u}-\delta _{l}\,{h(p,q_j)}\,\phi_j"

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