Hello,
I wrote a similar post few hours ago, but for some reason i'm not authorised to edit the previous post, so here I am posting the edited version, sorry for the incovenience
.
I'm pretty new on Stata (version 17) and I would appreciate your help on the following problem, on which I've been stuck for several hours.
I have a dataset on yearly british output (agricolture, coal, mining, total industry, services etc...) from 1700 to 1870, as you can see below. All variables (except for 'year', obviously) are indexes and the base year is 1700 (1700=100). For each variable (except 'year'), I would like to create 3 new indexes, with a different base year, in particular 1725=100, 1789=100 and 1870=100.
Here there is a sample of my data, considering some variables:
Now, I know how to create every single new index 'manually'; for example, to create 3 new indexes for agricoltural output based in 1725, 1789 and 1870, I would use, respectively, these commands:
where [26] [90] and [171] are the observation numbers for 1725, 1789 and 1870. Repeating these commands for all my variables would require a lot of typing... and i can't really figure out how to loop such a command.
Is there any way to loop the creation of the new indexes?
Can someone help me with this?
Thank you.
PS: sorry if my english is not perfect
I wrote a similar post few hours ago, but for some reason i'm not authorised to edit the previous post, so here I am posting the edited version, sorry for the incovenience

I'm pretty new on Stata (version 17) and I would appreciate your help on the following problem, on which I've been stuck for several hours.
I have a dataset on yearly british output (agricolture, coal, mining, total industry, services etc...) from 1700 to 1870, as you can see below. All variables (except for 'year', obviously) are indexes and the base year is 1700 (1700=100). For each variable (except 'year'), I would like to create 3 new indexes, with a different base year, in particular 1725=100, 1789=100 and 1870=100.
Here there is a sample of my data, considering some variables:
Code:
dataex year tot_output_agr_1700 Tin_ind_1700 Iron_ind_1700 Coal_ind_1700 WoolTextiles_ind_1700 Leather_ind_1700 Foodstuffs_ind_1700 Construction_ind_1700, count (171) * Example generated by -dataex-. For more info, type help dataex clear input int year double(tot_output_agr_1700 Tin_ind_1700 Iron_ind_1700 Coal_ind_1700 WoolTextiles_ind_1700 Leather_ind_1700 Foodstuffs_ind_1700 Construction_ind_1700) 1700 100 100 100 100 100 100 100 100 1701 111.063 95.313 98.977 118.75 102.752 103.256 101.898 81.513 1702 117.736 78.125 99.348 68.75 96.28 100.508 103.707 79.832 1703 104.666 112.5 98.742 87.5 92.374 97.756 112.829 94.958 1704 131.248 103.125 98.401 106.25 92.552 96.95 110.776 109.244 1705 127.027 98.438 97.415 100 97.666 101.038 117.48 101.261 1706 98.721 103.125 97.862 87.5 94.419 99.744 106.877 93.277 1707 115.155 101.563 98.62 81.25 100.532 104.26 111.743 117.647 1708 91.182 101.563 98.734 106.25 106.856 107.075 109.024 105.042 1709 77.499 100 98.385 112.5 49.05 67.988 103.846 84.034 1710 72.16 151.563 100.713 93.75 54.224 70.881 98.891 79.832 1711 93.152 100 100.781 106.25 58.128 71.873 102.074 55.462 1712 100.319 100 102.213 100 61.441 73.633 102.074 55.462 1713 77.248 93.75 102.911 100 53.384 68.573 94.507 85.714 1714 95.813 78.125 104.101 125 58.901 74.029 99.578 101.681 1715 84.364 82.813 105.746 112.5 65.578 79.81 99.698 115.966 1716 85.427 75 115.297 118.75 54.594 75.892 106.317 81.513 1717 95.932 115.625 125.152 131.25 58.463 81.434 110.584 96.639 1718 115.785 114.063 138.758 118.75 59.87 83.575 112.323 111.765 1719 95.744 109.375 135.893 125 67.094 87.622 115.895 110.084 1720 132.443 103.125 134.513 125 76.281 95.004 115.973 140.336 1721 128.661 79.688 128.987 137.5 76.277 94.117 116.31 111.765 1722 118.288 96.875 122.931 137.5 78.174 102.07 117.633 121.008 1723 109.716 95.313 122.976 137.5 71.687 100.681 117.539 106.723 1724 114.304 110.938 122.953 131.25 87.857 98.945 112.085 142.017 1725 117.2 115.625 122.847 137.5 88.442 101.375 111.441 142.857 1726 100.414 106.25 120.672 150 70.362 103.459 111.08 117.647 1727 104.657 110.938 120.52 143.75 70.907 102.417 113.37 115.966 1728 121.705 101.563 118.367 131.25 69.946 98.945 106.089 129.412 1729 117.667 110.938 114.835 143.75 51.648 95.126 104.216 99.16 1730 113.608 107.813 112.098 131.25 69.189 98.598 111.328 111.765 1731 110.484 96.875 111.302 137.5 69.224 96.515 109.055 103.361 1732 131.295 129.688 107.914 131.25 47.129 97.557 112.164 134.454 1733 130.545 114.063 107.99 143.75 58.869 97.209 117.319 123.529 1734 125.576 128.125 103.244 131.25 60.087 98.598 109.675 126.05 1735 115.534 121.875 102.532 150 60.904 102.417 110.06 118.487 1736 146.197 107.813 96.869 150 61.548 108.666 108.278 124.37 1737 142.602 117.188 98.575 137.5 53.313 108.666 110.94 121.008 1738 130.791 93.75 103.578 143.75 53.698 105.194 109.369 113.445 1739 130.633 125 112.401 131.25 35.347 106.583 113.672 84.874 1740 128.323 118.75 114.198 168.75 35.795 97.557 104.854 99.16 1741 131.598 107.813 115.873 131.25 37.584 98.945 105.723 121.849 1742 141.842 125 122.279 137.5 37.584 96.862 109.45 131.933 1743 128.124 131.25 121.983 143.75 38.032 92.696 112.82 125.21 1744 117.839 129.688 124.674 137.5 40.269 91.307 115.209 100.84 1745 121.736 120.313 128.457 137.5 39.821 89.224 106.402 118.487 1746 128.983 132.813 131.087 143.75 42.059 92.696 105.637 130.252 1747 149.494 128.125 136.075 137.5 44.296 96.862 111.502 105.042 1748 128.015 139.063 139.683 131.25 44.296 94.779 114.701 131.092 1749 128.963 79.688 142.715 150 44.296 99.64 111.779 113.445 1750 128.047 200 147.574 137.5 46.98 102.417 118.166 143.697 1751 123.972 157.813 150.879 156.941 46.085 99.987 115.204 127.731 1752 137.624 179.688 152.1 151.326 45.191 105.542 114.659 141.176 1753 140.156 179.688 151.903 151.989 44.296 104.5 117.567 139.496 1754 136.297 192.188 153.335 159.012 45.191 101.028 116.882 138.655 1755 136.53 192.188 153.206 146.927 44.743 101.375 115.037 160.504 1756 133.477 192.188 152.994 167.735 40.269 104.5 104.236 152.101 1757 156.443 192.188 155.367 156.351 45.191 102.417 102.409 131.933 1758 162.924 192.188 155.867 138.135 43.848 104.5 112.657 131.092 1759 157.392 185.938 156.178 172.669 40.716 107.972 112.93 149.58 1760 164.727 192.188 158.71 160.904 41.164 104.847 123.224 123.529 1761 172.378 165.625 158.338 159.483 42.059 108.666 121.078 153.782 1762 161.681 179.688 159.066 164.648 41.164 112.485 114.144 132.773 1763 163.445 192.188 160.658 182.748 39.374 110.055 110.01 179.832 1764 161.329 185.938 164.107 181.09 42.059 120.47 114.977 163.866 1765 153.503 192.188 166.7 179.433 41.164 114.221 110.049 205.882 1766 132.912 214.063 165.676 194.959 45.638 109.708 105.701 214.522 1767 159.154 200 166.609 184.49 53.692 107.625 104.336 171.292 1768 165.813 185.938 166.631 193.698 48.323 104.847 110.573 185.821 1769 181.86 200 167.314 203.087 51.902 107.277 109.442 201.772 1770 164.75 206.25 167.533 198.936 51.455 107.972 109.849 201.797 1771 175.416 200 166.389 220.911 51.902 111.096 109.784 253.213 1772 150.736 220.313 160.681 236.201 53.244 114.221 113.829 263.738 1773 175.796 200 158.899 216.711 55.929 116.998 110.108 242.642 1774 169.247 171.875 158.126 203.995 43.848 114.915 109.011 214.774 1775 173.607 185.938 158.983 219.415 45.638 113.874 112.216 258.48 1776 179.923 185.938 159.809 239.107 47.428 111.791 102.792 252.79 1777 186.984 192.188 164.206 237.23 48.77 115.61 104.961 264.879 1778 179.953 179.688 164.289 227.437 54.587 116.651 106.7 278.726 1779 184.171 185.938 162.477 216.972 49.218 113.874 109.244 267.506 1780 197.185 206.25 158.179 245.42 42.953 113.527 116.969 260.259 1781 216.931 185.938 157.3 245.683 43.848 116.304 111.245 263.3 1782 193.065 179.688 166.002 245.947 51.902 119.776 114.545 284.953 1783 188.081 179.688 170.421 262.095 55.482 121.859 99.829 456.278 1784 192.249 185.938 166.578 270.327 53.244 119.081 124.426 316.83 1785 176.828 200 192.382 278.576 54.587 122.553 121.966 305.968 1786 188.477 234.375 213.614 283.349 57.271 121.165 118.195 389.464 1787 168.894 226.563 225.697 255.193 59.061 122.553 123.85 403.31 1788 166.825 165.625 250.068 301.263 55.482 124.636 123.334 369.743 1789 171.082 240.625 261.355 323.182 58.166 118.387 121.698 331.431 1790 195.533 220.313 292.594 311.082 59.508 128.455 122.765 376.15 1791 194.329 240.625 302.403 334.229 57.271 130.191 132.51 347.977 1792 197.48 268.75 318.769 339.951 68.457 129.844 138.493 491.855 1793 198.725 226.563 333.831 320.249 61.746 134.357 138.239 389.214 1794 170.143 234.375 336.325 309.187 58.166 137.829 138.874 341.783 1795 213.306 240.625 354.753 356.265 67.562 135.399 138.882 378.403 1796 212.443 214.063 357.345 326.957 68.01 145.12 148.117 536.877 1797 206.52 226.563 415.631 347.753 66.22 134.357 156.404 421.419 1798 211.483 200 455.996 308.882 63.088 134.357 153.112 322.965 1799 204.051 200 477.13 355.811 72.037 129.497 160.158 318.58 1800 201.878 179.688 534.733 421.277 72.931 135.052 124.717 420.579 1801 236.646 165.625 590.888 359.343 64.43 138.871 124.592 484.218 1802 223.838 185.938 610.817 431.956 65.325 142.45 136.116 367.733 1803 211.054 206.25 659.953 432.286 66.667 125.27 139.813 429.428 1804 202.692 214.063 641.419 480.225 73.379 125.986 133.177 422.962 1805 228.333 192.188 653.252 480.762 77.406 143.166 135.176 447.231 1806 222.911 206.25 711.128 502.171 76.063 141.018 139.679 350.078 1807 239.87 171.875 769.504 454.549 72.931 139.586 144.558 505.559 1808 234.74 165.625 803.73 525.575 68.457 144.597 145.844 300.384 1809 238.802 179.688 801.918 467.722 75.169 151.04 136.254 367.35 1810 231.456 145.313 819.019 539.273 70.694 153.903 142.818 636.136 1811 210.473 165.625 903.631 539.719 68.01 143.166 156.465 653.423 1812 209.716 165.625 898.514 550.152 71.589 135.291 146.941 464.907 1813 253.458 165.625 884.771 539.43 81.88 153.903 145.452 347.641 1814 221.964 185.938 866.343 614.112 79.643 157.482 151.945 249.843 1815 235.692 206.25 854.586 614.362 80.985 178.957 152.255 538.6 1816 224.538 234.375 707.11 656 75.169 181.82 149.1 412.148 1817 242.947 289.063 690.752 610.172 80.09 200.432 155.822 394.719 1818 223.088 282.813 732.921 651.511 88.592 193.273 165.397 448.192 1819 216.353 234.375 727.373 627.625 82.327 184.684 164.21 543.559 1820 261.479 206.25 825.644 679.374 77.853 171.799 189.951 516.469 1821 258.563 234.375 993.185 664.766 84.565 173.23 164.459 533.545 1822 251.861 226.563 924.098 693.749 86.354 176.809 174.166 522.16 1823 255.045 295.313 1140.214 778.819 87.697 193.989 161.392 554.88 1824 262.919 351.563 1339.804 786.806 90.829 209.737 172.648 631.941 1825 263.34 303.125 1401.903 806.147 106.489 206.874 193.367 711.421 1826 241.535 323.438 1270.558 863.834 87.697 182.536 200.536 721.464 1827 263.552 385.938 1666.927 797.98 97.093 198.284 186.545 605.955 1828 235.256 343.75 1690.706 810.115 99.33 229.781 202.01 654.232 1829 245.454 309.375 1665.767 886.579 94.856 234.076 200.593 743.878 1830 253.77 309.375 1648.81 960.875 104.252 244.813 211.406 680.357 1831 258.836 303.125 1460.241 970.544 102.462 224.054 231.502 804.058 1832 279.805 303.125 1542.245 1035.425 99.777 199.716 214.153 872.127 1833 261.038 282.813 1905.139 1045.323 107.831 231.928 222.961 838.176 1834 266.426 206.25 1925.136 1054.764 113.648 256.982 226.714 802.29 1835 308.181 295.313 2278.373 1146.483 108.279 240.518 233.129 990.339 1836 293.711 282.813 2373.651 1203.675 126.623 252.687 238.871 914.365 1837 303.659 329.688 2538.281 1314.07 114.543 241.234 232.522 1012.352 1838 305.327 357.813 2758.141 1329.908 117.227 248.392 236.255 966.737 1839 290.023 371.875 3049.788 1322.109 122.149 260.561 236.093 982.72 1840 313.449 364.063 3408.586 1355.691 115.437 243.381 241.309 958.398 1841 289.705 362.5 3587.986 1414.644 119.017 291.342 237.588 914.183 1842 315.586 362.5 2556.44 1431.095 110.516 315.68 230.577 673.492 1843 315.779 371.875 2690.989 1373.989 113.2 315.68 230.428 873.309 1844 346.005 400 4798.931 1348.588 126.176 346.461 233.216 923.9 1845 326.093 420.313 3677.685 1656.761 133.782 348.608 239.263 1338.085 1846 319.086 434.375 4215.883 1575.548 127.071 292.773 246.149 1517.256 1847 339.218 446.875 4664.381 1790.891 122.596 321.407 249.691 1246.733 1848 319.21 460.938 4843.781 1849.814 128.413 302.795 242.648 1346.573 1849 337.183 481.25 4933.48 1747.883 125.281 317.827 256.508 1134.807 1850 309.692 468.75 5381.978 1912.749 121.254 297.784 273.316 1058.091 1851 323.217 426.563 5875.326 2083.542 127.966 313.532 285.296 1066.358 1852 344.759 434.375 6234.125 2072.634 137.809 282.752 249.584 1113.914 1853 297.485 400 6772.323 2050.816 157.496 377.957 263.218 1341.043 1854 370.039 412.5 7041.422 2454.435 137.809 309.238 295.71 1508.173 1855 339.095 420.313 7400.22 2496.921 125.281 297.068 257.371 1459.811 1856 341.147 426.563 8207.517 2581.895 133.335 308.522 277.255 1403.607 1857 322.471 460.938 8207.517 2676.674 138.704 414.464 298.923 1487.763 1858 344.257 481.25 7803.869 2624.382 144.968 305.658 301.415 1574.925 1859 319.346 495.313 8611.165 2706.088 150.785 347.176 282.395 1671.103 1860 281.602 468.75 8835.415 2872.767 157.496 339.302 285.828 1782.31 1861 308.776 523.438 8431.766 2915.254 138.704 324.986 301.017 1610.992 1862 300.162 592.188 8925.114 2977.35 158.838 340.018 342.155 2016.745 1863 409.4 701.563 10315.459 3127.688 154.364 349.324 343.38 2109.918 1864 408.524 709.375 11033.056 3238.808 182.105 383.684 335.119 2236.153 1865 361.291 701.563 10943.356 3343.391 170.919 391.558 322.892 2335.337 1866 354.659 698.438 10270.609 3428.365 202.239 442.381 323.57 2422.499 1867 359.016 606.25 10808.807 3477.388 188.369 378.673 326.083 2515.672 1868 386.469 646.875 11391.854 3536.216 199.555 423.054 372.223 2593.817 1869 398.122 681.25 12333.7 3624.458 196.87 365.072 372.414 2662.945 1870 383.662 715.625 13679.195 3774.796 214.32 445.245 368.308 2744.096 end
Now, I know how to create every single new index 'manually'; for example, to create 3 new indexes for agricoltural output based in 1725, 1789 and 1870, I would use, respectively, these commands:
Code:
generate tot_output_agr_1725 = tot_output_agr_1700/tot_output_agr_1700[26]*100 generate tot_output_agr_1789 = tot_output_agr_1700/tot_output_agr_1700[90]*100 generate tot_output_agr_1870 = tot_output_agr_1700/tot_output_agr_1700[171]*100
Is there any way to loop the creation of the new indexes?
Can someone help me with this?
Thank you.
PS: sorry if my english is not perfect

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