0 개 추천

Hello!
I'm trying to get the coordinates from a graph when Y cross the X axis (Y=0) and I'm having trouble finding this solution. The plot is basically a combination of points (X and Y) and do not necessarily have integer values. How can I proceed? Thanks
Here is an example of this plot:
X = [-205078000000000,00 -190430000000000,00 -175781000000000,00 -156250000000000,00 -141602000000000,00 -117188000000000,00 -102539000000000,00 -0.927730000000000 -0.781250000000000 -0.732420000000000 -0.537110000000000 -0.341800000000000 -0.195310000000000 0,00 0,00 0.195310000000000 0.292970000000000 0.439450000000000 0.683590000000000 0.732420000000000 0.878910000000000 0.976560000000000 112305000000000,00 136719000000000,00 151367000000000,00 170898000000000,00 190430000000000,00 205078000000000,00 224609000000000,00 229492000000000,00 253906000000000,00 268555000000000,00 283203000000000,00 302734000000000,00 317383000000000,00 332031000000000,00 332031000000000,00 341797000000000,00 351563000000000,00 351563000000000,00 361328000000000,00 375977000000000,00 395508000000000,00 410156000000000,00 415039000000000,00 434570000000000,00 449219000000000,00 454102000000000,00 463867000000000,00 463867000000000,00 473633000000000,00 473633000000000,00 478516000000000,00 493164000000000,00 493164000000000,00 517578000000000,00 527344000000000,00 541992000000000,00 556641000000000,00 556641000000000,00 571289000000000,00 585938000000000,00 610352000000000,00 625000000000000,00 649414000000000,00 668945000000000,00 673828000000000,00 683594000000000,00 693359000000000,00 703125000000000,00 717773000000000,00 722656000000000,00 732422000000000,00 742188000000000,00 742188000000000,00 756836000000000,00 761719000000000,00 766602000000000,00 776367000000000,00 771484000000000,00 786133000000000,00 786133000000000,00 800781000000000,00 815430000000000,00 820313000000000,00 834961000000000,00 839844000000000,00 864258000000000,00 878906000000000,00 888672000000000,00 898438000000000,00 903320000000000,00 908203000000000,00 917969000000000,00 922852000000000,00 932617000000000,00 957031000000000,00 986328000000000,00 102050800000000,00 104980500000000,00 106933600000000,00];
Y = [-599739554,78 -592692899,06 -585506566,66 -578279633,17 -570989523,41 -563491989,06 -556244088,36 -549103770,37 -542052956,48 -535074784,20 -527790864,49 -520300201,53 -512578856,84 -505085873,20 -497922253,87 -490469464,07 -482829624,94 -475103570,06 -467389867,06 -459544952,05 -451309009,84 -442905023,74 -434313642,96 -425753113,26 -417197361,63 -408380357,33 -399517893,17 -390464118,51 -381435719,92 -372531106,70 -363367781,94 -353921258,30 -343925703,27 -333718484,48 -323635657,72 -313532373,15 -303509237,80 -293189267,41 -282435147,05 -271229641,22 -259677782,79 -248242552,53 -236778917,55 -225139611,40 -213059945,34 -200518042,22 -187970390,89 -175271962,77 -162281991,85 -148741072,85 -134631399,94 -120296203,82 -105476980,93 -90153609,80 -74182708,22 -57539659,82 -40556371,36 -22961799,25 -4846997,45 13695312,86 32690081,45 52045480,45 72037101,38 92461238,40 113355702,71 134880430,21 156831072,44 179358633,58 202372519,02 226024807,22 250348801,76 275016871,16 300302132,57 326116714,50 352492722,64 379582271,39 407178786,87 435436666,75 464268793,30 493949086,28 524630692,18 556108378,52 588660907,86 622089281,37 656437508,95 691868860,42 728427166,74 766400618,17 805360016,95 845237609,53 886203228,12 928184532,61 971469553,39 1015865477,26 1061422731,82 1108313448,57 1156353913,06 1205731942,44 1256402226,25 1308563976,55 1362294061,31];

이 질문에 답변하려면 로그인하십시오.

 채택된 답변

John D'Errico
John D'Errico 2023년 3월 19일
편집: John D'Errico 2023년 3월 19일
Ran in:

0 개 추천

Ran in:
X = [-205078000000000.00 -190430000000000.00 -175781000000000.00 -156250000000000.00 -141602000000000.00 -117188000000000.00 -102539000000000.00 -0.927730000000000 -0.781250000000000 -0.732420000000000 -0.537110000000000 -0.341800000000000 -0.195310000000000 0.00 0.00 0.195310000000000 0.292970000000000 0.439450000000000 0.683590000000000 0.732420000000000 0.878910000000000 0.976560000000000 112305000000000.00 136719000000000.00 151367000000000.00 170898000000000.00 190430000000000.00 205078000000000.00 224609000000000.00 229492000000000.00 253906000000000.00 268555000000000.00 283203000000000.00 302734000000000.00 317383000000000.00 332031000000000.00 332031000000000.00 341797000000000.00 351563000000000.00 351563000000000.00 361328000000000.00 375977000000000.00 395508000000000.00 410156000000000.00 415039000000000.00 434570000000000.00 449219000000000.00 454102000000000.00 463867000000000.00 463867000000000.00 473633000000000.00 473633000000000.00 478516000000000.00 493164000000000.00 493164000000000.00 517578000000000.00 527344000000000.00 541992000000000.00 556641000000000.00 556641000000000.00 571289000000000.00 585938000000000.00 610352000000000.00 625000000000000.00 649414000000000.00 668945000000000.00 673828000000000.00 683594000000000.00 693359000000000.00 703125000000000.00 717773000000000.00 722656000000000.00 732422000000000.00 742188000000000.00 742188000000000.00 756836000000000.00 761719000000000.00 766602000000000.00 776367000000000.00 771484000000000.00 786133000000000.00 786133000000000.00 800781000000000.00 815430000000000.00 820313000000000.00 834961000000000.00 839844000000000.00 864258000000000.00 878906000000000.00 888672000000000.00 898438000000000.00 903320000000000.00 908203000000000.00 917969000000000.00 922852000000000.00 932617000000000.00 957031000000000.00 986328000000000.00 102050800000000.00 104980500000000.00 106933600000000.00];
Y = [-599739554.78 -592692899.06 -585506566.66 -578279633.17 -570989523.41 -563491989.06 -556244088.36 -549103770.37 -542052956.48 -535074784.20 -527790864.49 -520300201.53 -512578856.84 -505085873.20 -497922253.87 -490469464.07 -482829624.94 -475103570.06 -467389867.06 -459544952.05 -451309009.84 -442905023.74 -434313642.96 -425753113.26 -417197361.63 -408380357.33 -399517893.17 -390464118.51 -381435719.92 -372531106.70 -363367781.94 -353921258.30 -343925703.27 -333718484.48 -323635657.72 -313532373.15 -303509237.80 -293189267.41 -282435147.05 -271229641.22 -259677782.79 -248242552.53 -236778917.55 -225139611.40 -213059945.34 -200518042.22 -187970390.89 -175271962.77 -162281991.85 -148741072.85 -134631399.94 -120296203.82 -105476980.93 -90153609.80 -74182708.22 -57539659.82 -40556371.36 -22961799.25 -4846997.45 13695312.86 32690081.45 52045480.45 72037101.38 92461238.40 113355702.71 134880430.21 156831072.44 179358633.58 202372519.02 226024807.22 250348801.76 275016871.16 300302132.57 326116714.50 352492722.64 379582271.39 407178786.87 435436666.75 464268793.30 493949086.28 524630692.18 556108378.52 588660907.86 622089281.37 656437508.95 691868860.42 728427166.74 766400618.17 805360016.95 845237609.53 886203228.12 928184532.61 971469553.39 1015865477.26 1061422731.82 1108313448.57 1156353913.06 1205731942.44 1256402226.25 1308563976.55 1362294061.31];
Using the code from Doug Schwarz's intersections code from the FEX, it is as easy as thiis:
format long g
xloc = intersections(X,Y,[min(X),max(X)],[0 0])
xloc =
556641000000000
Find intersections on the FEX, here:
https://www.mathworks.com/matlabcentral/fileexchange/11837-fast-and-robust-curve-intersections?s_tid=srchtitle

추가 답변 (0개)

카테고리

도움말 센터 및 File Exchange에서 2-D and 3-D Plots에 대해 자세히 알아보기

제품

태그

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by