{"id":368,"date":"2011-04-01T03:06:29","date_gmt":"2011-04-01T03:06:29","guid":{"rendered":"https:\/\/info.calcofi.com\/2011\/04\/01\/distance-from-shore\/"},"modified":"2011-04-01T03:06:29","modified_gmt":"2011-04-01T03:06:29","slug":"distance-from-shore","status":"publish","type":"post","link":"https:\/\/mindwander.com\/index.php\/2011\/04\/01\/distance-from-shore\/","title":{"rendered":"Distance From Shore"},"content":{"rendered":"
\n\tDistance = Distance from shore in nautical miles<\/strong>. The CalCOFI database includes a calculated distance-from-shore value used primarily for vertical section plots published in the hydrographic data reports. CalCOFI line coastline intercepts, digitized from Google maps, are tabulated below; the latitudes and longitudes are the origins (zero starting point) for vertical section plots.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n\t\t\t\t\tLine<\/td>\n\n\t\t\t\t\tSta (if calculated)<\/td>\n\n\t\t\t\t\tLatitude N<\/td>\n\n\t\t\t\t\tLongitude W<\/td>\n<\/tr>\n
\n\t\t\t\t\t 93.3, 93<\/td>\n\n\t\t\t\t\t 26.2<\/td>\n\n\t\t\t\t\t 32.978982<\/td>\n\n\t\t\t\t\t -117.272386<\/td>\n<\/tr>\n
\n\t\t\t\t\t 90.0<\/td>\n\n\t\t\t\t\t 27.6<\/td>\n\n\t\t\t\t\t 33.497430<\/td>\n\n\t\t\t\t\t -117.741800<\/td>\n<\/tr>\n
\n\t\t\t\t\t 86.7, 87<\/td>\n\n\t\t\t\t\t 32.1<\/td>\n\n\t\t\t\t\t 33.917500<\/td>\n\n\t\t\t\t\t -118.430800<\/td>\n<\/tr>\n
\n\t\t\t\t\t 83.3, 83<\/td>\n\n\t\t\t\t\t 39.1<\/td>\n\n\t\t\t\t\t 34.273350<\/td>\n\n\t\t\t\t\t -119.308200<\/td>\n<\/tr>\n
\n\t\t\t\t\t 80.0<\/td>\n\n\t\t\t\t\t 50.3<\/td>\n\n\t\t\t\t\t 34.474500<\/td>\n\n\t\t\t\t\t -120.476500<\/td>\n<\/tr>\n
\n\t\t\t\t\t 76.7, 77<\/td>\n\n\t\t\t\t\t 47.23<\/td>\n\n\t\t\t\t\t 35.148000<\/td>\n\n\t\t\t\t\t -120.653000<\/td>\n<\/tr>\n
\n\t\t\t\t\t 73.3, 73<\/td>\n\n\t\t\t\t\t 49.6<\/td>\n\n\t\t\t\t\t 35.653333<\/td>\n\n\t\t\t\t\t -121.221667<\/td>\n<\/tr>\n
\n\t\t\t\t\t 70.0<\/td>\n\n\t\t\t\t\t 50.9<\/td>\n\n\t\t\t\t\t 36.196667<\/td>\n\n\t\t\t\t\t -121.723333<\/td>\n<\/tr>\n
\n\t\t\t\t\t 66.7, 67<\/td>\n\n\t\t\t\t\t 46.9<\/td>\n\n\t\t\t\t\t 36.903333<\/td>\n\n\t\t\t\t\t -121.845000<\/td>\n<\/tr>\n
\n\t\t\t\t\t 63.3, 63<\/td>\n\n\t\t\t\t\t 49.3<\/td>\n\n\t\t\t\t\t 37.398333<\/td>\n\n\t\t\t\t\t -122.425000<\/td>\n<\/tr>\n
\n\t\t\t\t\t 60.0<\/td>\n\n\t\t\t\t\t 49.0<\/td>\n\n\t\t\t\t\t 37.988333<\/td>\n\n\t\t\t\t\t -122.815000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\n\tBasic Source Code (translated from F77 Fortran)<\/span><\/strong><\/p>\n

\n\t\tPublic Static Sub OLDDS(LAT1!, Lon1!, D!, Liine$)
\n\t\t‘C
\n\t\t‘C — ROUTINE TO RETURN DISTANCE IN NAUTICAL MILES GIVEN TWO POSITIONS
\n\t\t‘C    IN DECIMAL DEGREES.  USES A METHOD THAT WILL MATCH THE RESULTS
\n\t\t‘C    PRODUCED IN THE OLD VERTICAL SECTION PROGRAM.
\n\t\t‘C
\n\t\t‘C  -> LAT0  — LATITUDE OF FIRST POINT. (DECIMAL DEGREES. SOUTH NEGATIVE.)
\n\t\t‘C  -> LON0  — LONGITUDE OF FIRST POINT. (WEST NEGATIVE)
\n\t\t‘C  -> LAT1  — LAT. OF SECOND POINT.
\n\t\t‘C  -> LON1  — LONG. OF SECOND POINT.
\n\t\t‘C  <- D     — DISTANCE (NAUTICAL MILES) BETWEEN POINTS.
\n\t\t‘C
\n\t\t  Dim COSD#
\n\t\t‘      Real LAT1, LON1, LAT2, LON2, D
\n\t\t‘      Real L, DLO, COSD, PI, F, A
\n\t\t      PI# = 3.141592654
\n\t\t      F# = PI# \/ 180
\n\t\t‘C
\n\t\t‘      INTRINSIC COS,ABS,SQRT
\n\t\t‘C
\n\t\t      ‘COSD#(A#) = Cos(A# * F#)
\n\t\t      If frmSelData.txtDataIn(6) = “” Then
\n\t\t        LineIn! = (Val(Liine$))
\n\t\t      Else
\n\t\t        LineIn! = Val(frmSelData.txtDataIn(6))
\n\t\t      End If
\n\t\t      D! = 0
\n\t\t      Dist2Orig$ = “”
\n\t\t190
\n\t\t    Select Case CInt(LineIn!)
\n\t\t    Case 93, 94 ‘, 93.3
\n\t\t            Lat0! = 32.969    ‘93.3 26.2 Google projection 2010; old value 32.95298 from Ralf & Nav Program
\n\t\t            Lon0! = -117.2696 ‘Google projection 2010; old value -117.2664
\n\t\t    Case 90, 91
\n\t\t            Lat0! = 33.49743   ‘90.0 27.6  Google checked 2010    ‘4969634422
\n\t\t            Lon0! = -117.7418      ‘745017037
\n\t\t    Case 87, 86 ‘, 86.7
\n\t\t            Lat0! = 33.9175    ‘86.7 32.1 Google projection 2010; old .89568      ‘918195424
\n\t\t            Lon0! = -118.4308  ‘Google projection 2010; old .419      ‘431669307
\n\t\t    Case 83, 84  ‘, 83.3
\n\t\t            Lat0! = 34.27335    ‘83.3 39.1  Google checked 2010  ‘2739356345
\n\t\t            Lon0! = -119.3082     ‘310048755
\n\t\t    Case 80, 79
\n\t\t            Lat0! = 34.4745     ‘80.0 50.3 Google projection 2010; old .4631       ‘4823190269
\n\t\t            Lon0! = -120.4765   ‘Google projection 2010; old .4739     ‘485679527
\n\t\t    Case 77, 76  ‘, 76.7
\n\t\t            Lat0! = 35.148     ‘76.7 47.23  Google checked 2010  ‘1446809515
\n\t\t            Lon0! = -120.653     ‘650653673
\n\t\t    Case 73  ‘, 73.3
\n\t\t            Lat0! = 35.6533333333
\n\t\t            Lon0! = -121.221666667
\n\t\t    Case 70
\n\t\t            Lat0! = 36.1966666667
\n\t\t            Lon0! = -121.723333333
\n\t\t    Case 67  ‘, 66.7
\n\t\t            Lat0! = 36.9033333333
\n\t\t            Lon0! = -121.845
\n\t\t    Case 63
\n\t\t            Lat0! = 37.3983333333
\n\t\t            Lon0! = -122.425
\n\t\t    Case 60  ‘, 57.8, 57.9
\n\t\t            Lat0! = 37.9883333333
\n\t\t            Lon0! = -122.815
\n\t\t    Case Else
\n\t\t     Select Case LineIn!
\n\t\t      Case 91.7, 91.6, 91.8, 92
\n\t\t            Lat0! = 33.25773      ‘from Ralf & Nav Program
\n\t\t            Lon0! = -117.4385
\n\t\t      Case 88.5, 88.6, 88.4, 88
\n\t\t            Lat0! = 33.69985      ‘from Ralf & Nav Program
\n\t\t            Lon0! = -118.0522
\n\t\t      Case 85.4, 85.5, 85.6
\n\t\t            Lat0! = 34.01588      ‘from Ralf & Nav Program
\n\t\t            Lon0! = -118.8243
\n\t\t      Case 82, 81.9, 82.1
\n\t\t            Lat0! = 34.435        ‘from Ralf & Nav Program
\n\t\t            Lon0! = -119.955
\n\t\t      Case 81.7, 81.8, 81
\n\t\t            Lat0! = 34.4174       ‘from Ralf & Nav Program
\n\t\t            Lon0! = -119.8033
\n\t\t      Case 78.5, 78.4, 78.6
\n\t\t            Lat0! = 34.77699      ‘from Ralf & Nav Program
\n\t\t            Lon0! = -120.6302
\n\t\t      Case Else
\n\t\t        If LineIn! <> Val(Liine$) And LineIn! <> Val(StndL$) Then
\n\t\t          LineIn! = Val(StndL$)
\n\t\t          GoTo 190
\n\t\t        Else
\n\t\t          Exit Sub
\n\t\t        End If
\n\t\t      End Select
\n\t\t  End Select
\n\t\t‘C
\n\t\t      Lon0! = Lon0! * -1
\n\t\t      L! = Abs(LAT1! – Lat0!)
\n\t\t      DLO! = Abs(Lon1! – Lon0!)
\n\t\t      If (DLO! > 180) Then DLO! = 360 – DLO!
\n\t\t‘C
\n\t\t      L! = L! * 60
\n\t\t      DLO! = DLO! * 60
\n\t\t      DLO! = DLO! * Cos(F# * ((Lat0! + LAT1!) \/ 2))
\n\t\t      D! = (Sqr(L! * L! + DLO! * DLO!)) * -1
\n\t\t      Dist2Orig$ = Format(D!, “#0.00”)
\n\t\t      If D! = 0 Then Dist2Orig$ = “”<\/p>\n

\t\tEnd Sub<\/span><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Distance = Distance from shore in nautical miles. The CalCOFI database includes a calculated distance-from-shore value used primarily for vertical section plots published in the hydrographic data reports. CalCOFI line coastline intercepts, digitized from Google maps, are tabulated below; the latitudes and longitudes are the origins (zero starting point) for vertical section plots. Line Sta (if […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[19],"tags":[],"class_list":["post-368","post","type-post","status-publish","format-standard","hentry","category-methods"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/mindwander.com\/index.php\/wp-json\/wp\/v2\/posts\/368","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mindwander.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mindwander.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mindwander.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mindwander.com\/index.php\/wp-json\/wp\/v2\/comments?post=368"}],"version-history":[{"count":0,"href":"https:\/\/mindwander.com\/index.php\/wp-json\/wp\/v2\/posts\/368\/revisions"}],"wp:attachment":[{"href":"https:\/\/mindwander.com\/index.php\/wp-json\/wp\/v2\/media?parent=368"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mindwander.com\/index.php\/wp-json\/wp\/v2\/categories?post=368"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mindwander.com\/index.php\/wp-json\/wp\/v2\/tags?post=368"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}