How to make make the vectors the same length using different values of time?

How can I make x1_0 and x1_1 equals to the length og X1 i.e 1200? The values of t_0 and t_1 should be different.

clear all; close all; clc;
c1=1;
d11=0.0100;
d12=-0.1421;
X1=[11500.2 11477.9 11417.3 11426.4 11413 11382.9 11375.1 11347.9 11351.1 11329.3 11318.9 11343.4 11360.7 11378.4 11414.2 11408.2 11413.6 11449.4 11444.1 11421.4 11388.5 11429.3 11438.1 11432.9 11408.2 11434.3 11444.8 11443.5 11491.8 11503.8 11581.8 11525.9 11529.5 11557.6 11523 11516 11504.1 11492.9 11480.3 11495.9 11445.1 11437.7 11468.5 11463 11488.5 11470.3 11491.1 11480.2 11488.9 11453.8 11456 11434.5 11460.6 11456.1 11454 11468.3 11464.4 11501 11453.8 11474.2 11458.2 11452.8 11434.6 11447.3 11379.5 11396.4 11409.9 11405.6 11433.3 11435.6 11434.2 11415.5 11483.6 11434.6 11452.2 11471.5 11445 11462.6 11433.3 11440.2 11442.3 11456 11408.6 11399.7 11369.8 11372.6 11401.4 11405 11426.6 11430.3 11405.6 11409.8 11405 11399.7 11381.2 11392.5 11383.6 11365.8 11362.4 11347.8 ...     
    11324.9 11353 11330.8 11319.6 11313.2 11322.2 11294.4 11341 11345.3 11325.8 11359.3 11353.1 11330.7 11344.4 11361.9 11375.6 11338.2 11366.3 11349.5 11354.3 11373.5 11396.7 11387.6 11402 11415.8 11401.3 11416.9 11408.7 11371.5 11403.5 11437.4 11438.5 11452.5 11468.8 11428.4 11418.4 11395.3 11437.6 11409 11428.3 11375.6 11361.3 11343.6 11350.5 11357.6 11354.6 11394.5 11404.6 11449.5 11423 11451.8 11455.4 11472.9 11431.5 11453.7 11438.5 11433.6 11425.8 11413.5 11418.7 11395 11404.8 11367.5 11365.8 11351.3 11340.4 11374.3 11365 11397.8 11404 11387.6 11361.9 11354.5 11348.3 11297.2 11284.1 11308.6 11339.1 11354.3 11350.4 11350.6 11353.5 11353.7 11295.5 11303.3 11267.1 11333.3 11351.6 11330.9 11330.8 11336.9 11359.3 11361.6 11382.9 11339.5 11346 11403.5 11371.2 11381.8 11340.7...      
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    11506.6 11461.1 11493.6 11487.1 11461.8 11417.7 11429.3 11406.7 11400.5 11401 11387.3 11399.4 11395.1 11401.3 11379.5 11400.8 11408.7 11447.4 11460.4 11458.7 11432.9 11454.1 11480.8 11474.9 11504.1 11463.2 11530 11539 11531.9 11524.3 11484.2 11521.7 11490 11498.9 11451.1 11461.9 11486.6 11459.8 11463.9 11464.4 11513.1 11529 11534.2 11547.4 11564.6 11566.9 11485.5 11502.6 11471.7 11501.8 11466.6 11410.4 11426.5 11390.9 11426.5 11363.5 11366.3 11389.5 11368.3 11329.5 11315.5 11329.6 11310.7 11318.2 11272.7 11320.9 11320.9 11326.6 11351.1 11330.3 11391.4 11390.9 11388.4 11364.3 11354.7 11374.6 11355 11357.8 11332.7 11376.9 11348.4 11339.5 11382 11370 11343.6 11335.1 11321 11327.7 11294 11302.5 11302.6 11304.3 11299.9 11294.7 11298.9 11305.2 11341 11363.8 11384.5 11389.7...      
    11371.8 11390.4 11402.2 11387.3 11387.6 11387.3 11394.4 11447.1 11465 11431.5 11457.1 11460.6 11485.7 11491 11458.5 11440.9 11434.8 11454.9 11453.5 11463 11446.3 11475.9 11482.5 11457.3 11454.8 11445 11442.8 11440.9 11386.9 11412.6 11387.1 11402 11376.8 11425.7 11426 11426.7 11421.5 11438.4 11455.1 11423 11450 11429.3 11486 11504.3 11494.1 11510.8 11527.5 11562.5 11570.8 11520.7 11496.2 11508.6 11514.3 11457.7 11457.8 11435.8 11465 11475.5 11459.7 11462.8 11452.2 11499.4 11508 11478.9 11483.9 11479.6 11493.1 11451.4 11421.4 11366.3 11389.8 11385 11339.1 11322.4 11336.5 11346.9 11315.2 11328.6 11323 11348.3 11351.3 11346.5 11369.6 11400.5 11426.4 11432.4 11404.5 11415 11428.9 11446.8 11408.2 11417.9 11379.6 11379.4 11411 11383.2 11409.2 11443.8 11453.7 11455.9...      
    11420.4 11392.9 11395.4 11389.9 11358.4 11370.3 11404.4 11406 11418.9 11404.7 11460.1 11472.4 11510.2 11472 11457.3 11493.7 11507.3 11512.8 11489.1 11481.3 11481.6 11451.9 11423.8 11336.1 11413.5 11412.1 11376.1 11368.6 11371.8 11361.7 11320.5 11294.2 11268.4 11302.5 11344.5 11320.8 11345.4 11308.4 11327.4 11337.9 11340 11354.1 11355.1 11376.6 11406.4 11422.9 11434.4 11441.6 11457.7 11474.1 11487.9 11489.5 11461.2 11477.4 11464.9 11506.4 11484.7 11476.8 11466.2 11746 11060.5 11805 11714 11676.6 11674.9 11609.2 11516.9 11505 11534.9 11527.1 11514.4 11513.6 11535.7 11450 11435.1 11390.1 11426.6 11406 11385.3 11359.2 11332.5 11327.7 11302.2 11296.2 11267 11269.5 11246.4 11260.3 11284.6 11268.1 11257.5 11258.9 11252.8 11259.1 11304.2 11286.2 11319.8 11441.8 11558.1 11648.4...      
    11671.6 11658.8 11612.9 11656.8 11823 11659.9 11559.5 11550 11601.1 11528.9 11489.8 11456.9 11447 11441.3 11456.1 11463.4 11443.9 11408.3 11414.5 11406.2 11408.4 11438.5 11427.3 11461.3 11444.7 11421.3 11413.1 11407.6 11421.8 11395 11379.2 11344.8 11333.3 11299 11296.6 11275.3 11275.4 11275.3 11268.8 11279.5 11304.4 11335.2 11284.6 11261.9 11256.3 11237.6 11242.8 11250.3 11298.5 11313.5 11262.5 11254.6 11256.5 11259.6 11258.3 11257.5 11269.6 11321.6 11369.7 11379.5 11356.1 11311.4 11309.1 11296.4 11322.4 11369.7 11398.9 11419.5 11399.9 11398.2 11425.6 11452.6 11476 11492 11438 11413.4 11441.6 11498.6 11481.6 11469.9 11448.4 11434.1 11452.9 11483.7 11463 11470.8 11447.8 11445.5 11446.8 11424.1 11438.2 11465.9 11454.2 11446.3 11448.6 11431.1 11428.8 11416.1 11407.1 11412.1...      
    11448.8 11449.7 11442.1 11424.9 11409.3 11402.4 11386.8 11413.2 11434.9 11447.9 11441.4 11434.9 11405.2 11414.3 11416.5 11437.9 11455.2 11404.8 11422.6 11435.6 11424.7 11457.5 11439 11442.2 11398.3 11381 11424.2 11421.2 11391 11390.9 11384.8 11402 11396.7 11382.7 11388.9 11357.5 11377.2 11353.7 11334.6 11346.5 11335.4 11330.6 11321 11329.2 11354.6 11369.8 11361 11363 11355.9 11399.1 11394 11410.7 11394 11405.1 11407.4 11399.2 11438 11435.8 11429.7 11419.8 11387.2 11375.3 11381.1 11381.3 11397.8 11383.4 11364.6 11332.7 11317 11345.3 11322 11359.8 11337.2 11331.4 11319.2 11321.3 11325 11334.7 11360.3 11356 11337.7 11343.6 11353.7 11379.3 11436.6 11428.2 11437.8 11411.4 11438.8 11461.5 11468.5 11489.3 11459.3 11437.7 11415.6 11398.6 11418.8 11415.6 11394.3 11380 ...       
    11365.9 11366.6 11369.4 11386.2 11405.7 11349 11372.3 11370.5 11370.2 11402.6 11385 11401.8 11382.5 11362.5 11353.6 11368.9 11365.3 11377.3 11375.3 11385.2 11364.7 11357 11366.8 11337.1 11348.1 11316.3 11308.3 11322.2 11311 11341.8 11350.1 11340.1 11348.3 11338.4 11379.9 11395.1 11368.1 11363.4 11342.3 11329.5 11317.9 11318.7 11304.5 11256.4 11277.6 11247.3 11264.2 11247.9 11245.6 11243.5 11257.1 11289.5 11250.5 11252.9 11243.2 11278.9 11323.5 11299.4 11328.1 11306.9 11311.5 11317.8 11308.3 11302.3 11276.2 11295.2 11252.7 11267.4 11268.3 11265.8 11271.8 11266.6 11280.2 11273.3 11300.6 11280.5 11298.7 11341.9 11336.2 11354.5 11351 11344.7 11346.5 11321.8 11358.6 11340.5 11352.6 11333.3 11347.1 11369.5 11352.9 11359.9 11335.2 11308.9 11331.4 11319.5 11344.5 11337.1 11352.8 11371.9 ...      
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    11356 11354.2 11335.5 11372.6 11370.7 11386.8 11363.4 11358.3 11397.9 11383.7 11396.8 11397.8 11385.2 11401.2 11395.9 11398.1 11394 11399.5 11373.6 11388.2 11377.5 11394.6 11414 11393.3 11406.4 11405.6 11410.5 11434.6 11413.3 11453.9 11439.2 11457.6 11458.4 11446.7 11439.1 11433.6 11441.8 11414.7 11436.4 11403.5 11450.9 11432.5 11439.6 11473.3 11449.6 11463.1 11452.3 11427.2 11401.4 11405.6 11360.7 11366.5 11336.1 11317.6 11289.2 11306.6 11306.7 11302.1 11350.6 11343.2 11368.7 11370 11365.4 11334.1 11317.6 11336 11305.5 11330.4 11306.5 11317.9 11321.9 11313.5 11344.5 11307.2 11335.5 11316.7 11334.7 11313.4 11326.3 11313.2 11307.2 11334.8 11321 11323.6 11317.9 11338.3 11330.7 11314.4 11334.7 11335.3 11353.3 11341.7 11366.5 11351.7 11353.6 11364.3 11361 11351.9 11337.9 11372.8];
X2=[8226.06 8234.99 8233.64 8237.88 8202.31 8221.06 8227.42 8218.15 8178.23 8171.49 8207.95 8185.35 8154.1 8199.58 8194.86 8208.41 8203.65 8196.02 8235.77 8223.88 8192.7 8193.73 8205.27 8226.7 8245.66 8220.71 8259.15 8248.48 8284.57 8286.82 8345.18 8279.08 8295.97 8273.65 8227.77 8205.47 8232.83 8167.27 8200.45 8236.65 8232.63 8247.13 8227.22 8217.31 8227.13 8180.41 8208.76 8228.25 8210.96 8174.71 8182.5 8209.88 8238.14 8245.51 8164.65 8192.09 8194.78 8194.36 8182.32 8236.12 8245.47 8207.3 8236.39 8282.31 8224.89 8218.68 8257.62 8215.52 8209.64 8223.77 8218.69 8213.66 8234.17 8229.77 8280.65 8237.61 8207.93 8193.78 8189.68 8167.78 8194.1 8190.04 8150.79 8217.72 8188.27 8214.29 8213.34 8212.68 8174.67 8190.03 8209.92 8188.18 8216.35 8200.95 8222.81 8246.59 8238.99 8249.34 8204.24 8217.16 ...      
    8210.35 8259.64 8197.23 8239.03 8207.05 8191.05 8203.94 8173.72 8176.97 8153.52 8160.5 8168.8 8185.04 8150.22 8158.93 8151.52 8111.29 8151.1 8097.85 8144.03 8140.46 8167.53 8159.25 8155.44 8156.78 8196.64 8143.66 8132.19 8138.97 8156.91 8170.51 8192.67 8218.02 8195.44 8208.8 8179.59 8183 8191.11 8233.25 8245.36 8194.83 8223.01 8201.91 8205.51 8212.19 8204.03 8204.12 8259.89 8242.94 8233.19 8258.76 8231.33 8235.68 8245.22 8247.8 8178.53 8219.02 8223.28 8158.23 8194.95 8202.36 8142.87 8163.35 8167.52 8159.81 8149.96 8174.4 8138.32 8128.75 8194.95 8179.86 8134.97 8141.51 8185.25 8128.94 8229.71 8151.01 8178.85 8203.2 8204.22 8216.75 8164.48 8169.25 8178.33 8158.7 8118.04 8094.7 8126.33 8150.82 8124.22 8113.7 8100.81 8135.34 8144.05 8158.51 8143.28 8143.6 8157.47 8208.36 8125.96 ...      
    8184.93 8145.76 8118.84 8143.85 8165.28 8154.06 8095.53 8138.86 8132.51 8227.04 8174.32 8179.97 8178.91 8169.49 8153.1 8091.13 8128.75 8146.08 8158.38 8146.54 8128.46 8145.7 8192.05 8168.78 8205.85 8151.25 8148.01 8184.38 8235.28 8184.78 8155.77 8158.95 8226.86 8248.3 8177.56 8237.23 8259.58 8283.72 8213.85 8247.76 8183.4 8187.61 8147.93 8130.08 8157.21 8141.87 8171.01 8138.22 8178.59 8178.8 8158.79 8114.83 8158.3 8126.95 8166.15 8149.29 8123.46 8122.4 8117.33 8138.1 8103.22 8104.56 8155.21 8188.46 8155.3 8163.98 8183.57 8195.58 8208.72 8171.84 8267.17 8182.96 8210.8 8191.56 8194.98 8204.95 8217.08 8284.39 8220.24 8200.02 8204.13 8198.1 8197.04 8195.33 8189.5 8190.71 8148.71 8134.98 8128.35 8139.34 8143.13 8153.06 8091.77 8128.33 8142.83 8163.67 8163.1 8135.13 8176.21 8175.64 ...      
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    8141.69 8161.22 8157.12 8235.79 8135.21 8161.28 8147.74 8191.95 8188.21 8196.57 8197.03 8222.23 8231.91 8237.34 8220.23 8265.16 8235.43 8243.56 8242.54 8251.76 8214.05 8231.24 8228.96 8209.11 8239.69 8255.56 8269.95 8229.03 8221.82 8263.55 8257.82 8214.61 8212.84 8213.05 8214.64 8150.89 8211.17 8175.03 8174.12 8193.35 8156.33 8162.19 8183.34 8183.74 8170.88 8180.07 8200.52 8250.46 8255.95 8202.63 8241.97 8215.22 8265.55 8203.03 8185.81 8169.04 8173.59 8159.21 8168.48 8164.32 8137.08 8118.61 8130.79 8118.49 8122.24 8145.2 8188.26 8192.85 8208.43 8165.7 8172.7 8212.71 8171.72 8183.29 8148.84 8197.59 8196.6 8171.99 8186.46 8172.19 8172.17 8135.82 8157.03 8147.96 8163.17 8188.74 8181.54 8193.91 8146.06 8144.29 8110.13 8133.68 8173.07 8159.61 8163.3 8135.27 8162.31 8144.74 8171.05 8226.62 ...      
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    8293.43 8260.55 8303.06 8299.15 8360.77 8329.79 8240.11 8230.51 8259.6 8197.68 8188.38 8183.48 8196.92 8166.36 8198.73 8164.93 8170.27 8147.03 8223 8138.94 8156.16 8164.39 8155.72 8178.98 8180.28 8190.69 8154.97 8193.14 8184.99 8172.17 8130.69 8142.55 8144.31 8115.72 8048.83 8075.45 8071.34 8064.61 8101.05 8090.44 8102.85 8126.25 8105.01 8092.98 8078.35 8087.25 8096.54 8073.06 8105.47 8121.79 8119.24 8101.02 8096.27 8079.21 8076.95 8089.91 8113.59 8098.24 8126.3 8169.81 8175.77 8134.34 8119.94 8136.28 8101.22 8150.51 8192.13 8179.82 8132.55 8133.62 8165.13 8183.43 8161.3 8179.33 8184.36 8154.11 8212.01 8205.37 8239.04 8146.78 8149.4 8168.6 8178.65 8165.64 8173.29 8172.32 8176.92 8195.25 8220.96 8175.41 8185.29 8170.03 8215.18 8204.93 8201.34 8173.33 8160.7 8176.72 8156.83 8165.31 ...      
    8157.87 8235.67 8181.53 8168.73 8136.67 8147.75 8177.77 8188.51 8160.16 8177.3 8149.09 8185.77 8144.27 8180.51 8175.4 8181.48 8137.63 8161.6 8181.94 8210.2 8182.66 8188.52 8129.08 8144.88 8178.94 8148.39 8182.95 8169.34 8139.76 8158.55 8118.04 8125.63 8171.23 8127.28 8145.29 8109.62 8124.71 8132.45 8112.67 8114.06 8113.31 8125.73 8096.24 8135.03 8092.65 8113.73 8124.21 8127.3 8135.47 8127.17 8168.6 8147.48 8169.64 8184.63 8198.8 8161.45 8217.57 8182.82 8160.87 8146.89 8117.93 8128.79 8151.23 8147.52 8122.01 8139.14 8106 8131.7 8134.35 8100.27 8145.79 8162.82 8108.69 8104.47 8125.88 8125.97 8116.38 8146.79 8088.69 8120.03 8097.53 8096.71 8119.56 8154.06 8118.71 8127.13 8133.21 8148.94 8178.64 8135.35 8159.48 8158.53 8146.53 8171.51 8103.67 8145.47 8122.18 8127.55 8088.76 8097.06 ...      
    8140.57 8146.75 8142.37 8100.94 8168.08 8124.65 8149.88 8151.18 8178.86 8147.66 8162.08 8142.38 8160.36 8163.35 8178.91 8143.07 8172.75 8161.33 8170.84 8145.67 8128.92 8114.74 8113.86 8125.33 8068.41 8051.2 8068.07 8052.68 8078.77 8075.73 8100.76 8058.76 8109.85 8123.14 8107.2 8125.7 8142.1 8130.18 8095.56 8108.59 8054.82 8080.38 8062.9 8032.11 8070.62 8039.36 8056.49 8035.93 8055.74 8019.63 8028.99 8045.89 8019.38 8048.76 8040.76 8053.07 8074.11 8059.87 8117.2 8161.72 8108.11 8085.76 8089.66 8101.81 8048.68 8129.06 8062.77 8089.87 8054.9 8055.97 8084.91 8078.51 8068.41 8048.12 8102.91 8068.5 8078.21 8127.31 8079.43 8093.2 8095.91 8100.71 8130.1 8121.39 8093.77 8089.13 8109.9 8113.07 8090.48 8111.66 8090.89 8073.06 8097.39 8068.79 8066.23 8067.98 8055.01 8101.63 8099.27 8086.71 ...     
    8096.21 8103.9 8095.26 8135.33 8104.26 8132.46 8109.49 8081.2 8098.03 8079.94 8066.3 8067.42 8065.8 8083.46 8075.46 8110.65 8114.34 8107.24 8118.53 8092.35 8142.23 8133.19 8135.77 8158.4 8118.01 8117.44 8102 8171.49 8115.86 8130.59 8167.56 8128.97 8106.85 8142.38 8128.23 8133.61 8138.02 8134.63 8122.41 8101.85 8158.21 8121.87 8118.53 8137.31 8151.02 8096.74 8083.79 8128.28 8101.16 8076.28 8083.05 8125.28 8160.46 8148.92 8127.4 8101.59 8116.55 8053.23 8075.39 8086.22 8066.48 8115.32 8058.08 8071.73 8096.91 8114.18 8089.15 8056.28 8096.87 8093.09 8107.67 8140.53 8097.82 8107.7 8092.29 8094.87 8112.63 8078.54 8112.22 8096.67 8084.19 8110.17 8081.21 8101.03 8156.31 8140.44 8144.85 8132.06 8146.75 8120.13 8078.95 8074.2 8047.28 8025.38 8087.44 8083.25 8073.98 8054.69 8078.66 8049.1 ...      
    8027.08 8030.48 8051.84 8053.14 8071.29 8055.21 8125.14 8078.12 8088.66 8066.28 8088.23 8122.83 8119.01 8168.8 8083.11 8138.18 8117.55 8118.47 8156.2 8148.97 8155.71 8142.36 8129.72 8174.38 8113.69 8155.96 8139.88 8125.8 8133.05 8095.7 8105.87 8135.92 8120.28 8146.81 8140.25 8140.91 8182.18 8138.57 8128.1 8136.92 8142.25 8109.74 8099.96 8165.19 8121.77 8155.19 8186.47 8150.21 8202.03 8156 8184.23 8207.17 8176.85 8150.14 8147.66 8163.57 8138.2 8124.88 8108.13 8109.92 8110.96 8119.05 8118.48 8109.66 8100.23 8113.92 8109.18 8094.58 8089.38 8102.25 8059.51 8090 8029.77 8051.08 8019.46 8028.62 8052.78 8020.07 8051.89 8061.86 8066.2 8055.71 8118.32 8088.48 8098.7 8057.77 8043.16 8069.36 8040.45 8082.19 8074.03 8096.58 8117.07 8063.68 8120.58 8057.13 8132.22 8084.16 8083.35 8096.31 ...       
    8103.3 8072.6 8083.32 8107.48 8072.39 8100.95 8128.31 8117.24 8107.33 8092.41 8152.53 8129.08 8119.26 8153.58 8090.23 8157.32 8144.45 8152.48 8136.19 8063.26 8086.34 8101.85 8123.43 8137.33 8113.49 8169.88 8099.16 8130.6 8148.71 8160.27 8144.55 8182.11 8121.19 8108.79 8150.1 8104.59 8176.42 8124.78 8148.67 8105.99 8153.15 8095.56 8153.23 8160.81 8116.26 8148.82 8121.18 8111.05 8110.94 8127.07 8102.71 8127.74 8089.68 8053.29 8050.64 8022.83 8046.84 8093.44 8050.45 8064 8103.42 8082.64 8090.93 8057.3 8030.26 8082.04 7999.1 8071.33 8021.39 8087.05 8045.42 8043.16 8052.49 8024.77 8083.58 8060.55 8067.42 8041.29 8080.22 8048.17 8047.75 8042.99 8056.78 8037.14 8051.18 8044.52 8044.64 8015.56 8065.05 8063.33 8075.15 8059.23 8073.28 8073.56 8024.31 8086.03 8069.31 8118.26 8079.33 8080];
%x1 at t_0
t_0=1:60
x1_0=c1+d11*X1(t_0)+d12*X2(t_0)
%x1 at t_1
t_1=61:120
x1_1=c1+d11*X1(t_1)+d12*X2(t_1)

Answer 1

[KSSV]

Read about interp1.