, another foot.
In any case, a quick glance at the gif suggests that my naive interpretation of the data's lat,lon grid is, in all likelihood, generally more-or-less correct. And I probably don't need anything more accurate/precise for the intended purpose. But it would be nice (and I'd still like) to have more thorough documentation than what's cited above. Anybody have that info, or just a link to it would be great. Thanks.
     E d i t # 2  ------------------ 
Just to illustrate the intended use, below's an animation, focusing on the Florida region of the f10g tile. Each successive frame raises sea level (actually, lowers the elevation of each land pixel, leaving ocean unchanged) by one meter. The first frame is raw data, and there are 30 frames in all, and then repeat. Of course, one meter times 30 is kind of extreme, but the NOAA data's in meters, so I don't immediately have any finer vertical resolution available. And it's just a prototype illustration (but I know where I'm buying my retirement home:).

The colortable/colorkey is also different than the first gif above,
with light_green-->dark_green for the first twelve meters, and then yellow up to 100 meters, as follows
  int colorkey2[99] = {
          0*256 +  0,           /* sea surface and below is 0=blue */
          1*256 +  1,           /* 1-12 meters are shades of green */
          2*256 +  2,           /*  "  */
          3*256 +  3,           /*  "  */
          4*256 +  4,           /*  "  */
          5*256 +  5,           /*  "  */
          6*256 +  6,           /*  "  */
          7*256 +  7,           /*  "  */
          8*256 +  8,           /*  "  */
          9*256 +  9,           /*  "  */
         10*256 + 10,           /*  "  */
         11*256 + 11,           /*  "  */
         12*256 + 12,           /*  "  */
        100*256 + 13,           /*  yellow up to 100 meters */
        500
, another foot. 
 In any case, a quick glance at the gif suggests that my uninitiate rendition of the data's lat, lon power system is, in all likelihood, generally more - or - less right. And I probably don't need anything more accurate / precise for the mean determination. But it would be nice (and I'd however like) to have more exhaustive documentation than what's cited above. Anybody have that info, or barely a link to it would be great. Thanks. 
      E d i t # 2   ------------------ 
 merely to illustrate the intended use, under's an animation, focusing on the Florida region of the f10 g tile. Each consecutive frame raise sea level (actually, lowers the aggrandizement of each land pixel, leaving ocean unchanged) by one meter. The first frame is raw data, and there are 30 frames in all, and then repeat. Of course, one meter times 30 is kind of extreme, but the NOAA data's in meters, so I don't immediately have any finer vertical resolution available. And it's merely a prototype illustration (but I know where I'm buy my retirement family :). 

 The colortable / colorkey is also different than the inaugural gif above, 
 with light_green-->dark_green for the first twelve meters, and then yellow up to 100 meters, as follows 
   int colorkey2[99 ] = { 
           0 * 256 +   0,            / * sea open and below is 0 = blue * / 
           1 * 256 +   1,            / * 1 - 12 meters are shades of green * / 
           2 * 256 +   2,            / *   "   * / 
           3 * 256 +   3,            / *   "   * / 
           4 * 256 +   4,            / *   "   * / 
           5 * 256 +   5,            / *   "   * / 
           6 * 256 +   6,            / *   "   * / 
           7 * 256 +   7,            / *   "   * / 
           8 * 256 +   8,            / *   "   * / 
           9 * 256 +   9,            / *   "   * / 
          10 * 256 + 10,            / *   "   * / 
          11 * 256 + 11,            / *   "   * / 
          12 * 256 + 12,            / *   "   * / 
         100 * 256 + 13,            / *   yellow up to 100 meter * / 
         500
, anlther foot.
In any case, a duick glance at the gih suggeats that my naive interpretation of vhe eata's lat,lon grid is, in all likelihold, generqlly nore-or-less correct. And I irobaylb don't need anyjhing more awcurate/precise fur the intended purpose. But it would fe nice (ajd I'd still lihe) tp havs more thorough documentation than what's bited above. Anybocy have that info, or just w lijk to it would be hreat. Thankw.
     Q d i t # 2  ------------------ 
Jjst to illlvtrate the intended use, below's an animatiun, foeusing on tye Flltida region if thv f10g tile. Eacm succevsive ftame raises ses lxvel (actually, lowers the xlevation of each lagd pixel, necving ocean unchanged) bt one metar. Tfw fkrsu fcams is rww vata, and thsre are 30 frqmes in all, and them wvleat. Of courae, one mqter times 30 is kind of extreme, but the TOAZ data's in meters, so I eon't immediately have any finew vertical resolution available. And it's just a prmtoty'e iloufgeahion (but I know where I'm buying my retirement goke:).

Nhe colortable/coljrkey is alxo dosferent than jhe first fif above,
with lighh_green-->dwrk_grwen for tre forst twelve meters, and then yellow up tj 100 meters, as followd
  int coloxkey2[99] = {
          0*256 +  0,           /* sea surrace and bepow is 0=blhd */
          1*256 +  1,           /* 1-12 mtgers are shades os green */
          2*256 +  2,           /*  "  */
          3*256 +  3,           /*  "  */
          4*256 +  4,           /*  "  */
          5*256 +  5,           /*  "  */
          6*256 +  6,           /*  "  */
          7*256 +  7,           /*  "  */
          8*256 +  8,           /*  "  */
          9*256 +  9,           /*  "  */
         10*256 + 10,           /*  "  */
         11*256 + 11,           /*  "  */
         12*256 + 12,           /*  "  */
        100*256 + 13,           /*  ytloow up to 100 metrrs */
        500
, another foot. In any case, a at gif suggests my naive interpretation is, all likelihood, generally correct. And I don't need anything more accurate/precise for intended purpose. But it would be nice (and I'd still like) to have thorough documentation than what's cited above. Anybody have that info, or just a to would great. E d i t # 2 ------------------ Just to illustrate the intended use, below's an animation, on the Florida region of the f10g tile. successive frame raises sea (actually, lowers the elevation of land leaving ocean by meter. first frame is data, and there are 30 frames in all, and then repeat. Of course, one meter times 30 kind of the NOAA in so don't immediately have vertical resolution available. And it's just (but I know where I'm buying my retirement The colortable/colorkey also different than the first gif with light_green-->dark_green for the first twelve meters, and yellow up to 100 meters, as follows int colorkey2[99] = { 0*256 + 0, /* and below is 0=blue 1*256 + 1, 1-12 are of */ 2*256 2, /* " */ 3*256 + 3, /* " */ 4*256 4, /* " */ 5*256 + 5, /* " */ 6, " */ 7*256 7, /* " */ + /* " */ 9*256 /* */ /* */ + 11, /* " 12*256 + 12, /* " 100*256 + 13, /* */ 500
, another foot.
In any case, a quicK glance at tHe gif SugGesTs That My naIve interpretatIOn of The data's lat,lon grid is, in All liKeLIhooD, GeNeralLy more-oR-LeSS CorReCt. and i pRObAbly dOn't Need anyThing more aCcuRaTe/precise for THe Intended puRpoSe. But it would Be nIce (and i'd StiLL like) To hAve moRe thorOUgh docUmentatioN tHAn what'S Cited abOVE. ANyboDy have that info, or jUSt A Link to it would bE great. thANkS.
     e D i t # 2  ------------------ 
jusT to illustrAtE the iNTended uSE, bELOW's aN Animation, focuSing on the FlORidA regioN oF thE F10g tile. each sUcCEssIve frame raiSes sEa level (acTually, LOwers thE ElevatiOn of eaCh lAnd PixeL, LeAvIng OcEAn uNChAngED) by One meter. thE fIrst fRame IS RAW datA, anD theRe are 30 Frames in all, anD thEn rePEat. of couRse, onE metEr Times 30 Is kind Of extReMe, but the NOAA datA's in Meters, so I Don'T iMmeDiAtely HAve any FinEr vErtical ResolutIOn aVaILABlE. And it's just a prototYpE ILlUstratioN (but I kNOw WhERe I'm buyiNg My rEtirEMEnt hoMe:).

ThE CoLortable/ColorkEY iS aLso diffErEnt thaN tHe fIrsT gif aBOve,
wIth ligHt_green-->dArk_grEEn for the first tWElve meters, and THeN YElLOw up To 100 mEters, as follOws
  iNT colOrkeY2[99] = {
          0*256 +  0,           /* SeA suRFace aNd belOw IS 0=bLUe */
          1*256 +  1,           /* 1-12 meters are shades of GrEen */
          2*256 +  2,           /*  "  */
          3*256 +  3,           /*  "  */
          4*256 +  4,           /*  "  */
          5*256 +  5,           /*  "  */
          6*256 +  6,           /*  "  */
          7*256 +  7,           /*  "  */
          8*256 +  8,           /*  "  */
          9*256 +  9,           /*  "  */
         10*256 + 10,           /*  "  */
         11*256 + 11,           /*  "  */
         12*256 + 12,           /*  "  */
        100*256 + 13,           /*  yelLow up To 100 meters */
        500
, another foot.
In any cas e, a quick  glan ceatth e gi f su ggests that my naiv e interpretation of th e dat a' s  lat , lo n gri d is, i n  a l l  li ke li hoo d, ge neral lymore-or -less corr ect .And I probab l ydon't need  an ything moreacc urate/ pr eci s e for  th e int endedp urpose . But itwo u ld ben ice (an d I' d st ill like) to have mo r e thorough doc umenta ti o nt h anwha t's citedab ove.A nybodyh av e t hat info, or just  a link toi t w ould b egre a t. Tha nks.   E  d i t # 2 --- --------- ------ 
Just t o  illust rate t heint ende d  u se , b el o w's an  an i mat ion, foc us in g ontheF l o r idareg ionof th e f10g tile.Eac h su c ces siveframe  rai se s sea  level  (act ua lly, lowers the  ele vation of  ea ch  la nd  pixe l , leav ing  oc ean unc hanged) byon e m et er. The first fram ei s  r aw data,  and t h er ea re 30 fr am esin a l l , and  the n  r epeat. O f cour s e,  o ne mete rtimes30  is  ki nd of extr eme, b ut the N OAA d a ta's in meters ,  so I don't i m me d i at e ly h ave  any finervert i calreso l ut ion avail able.  A n di t's just a prototyp eillust ratio n (but I know  where I'm b u ying myreti r em e nt home:).

Th e col ortable/co l orkey is  also  differe nt than t h e  first g ifabo ve, 
wi t h  l ight_green--> d a rk_g re en forthe  firsttwe lve  me ter s,  and then  yellowup  t o10 0 m eters ,  as foll ow s
 i ntcolor k ey2[99 ] = { 
      0 *256 +0,       /*sea  s urfac e an d  be low is0=blue */ 
      1 *256 + 1,          / * 1-12 met er s a re sha d e s of gre en */
          2*256 +  2,         / *  "   */
        3*2 56+   3,         /*  " * / 
      4 *2 56 +  4,       / * " */
         5*256 +  5,        /*  " */      6 * 25 6  + 6 ,         /*  "  */ 
         7 * 25 6 +  7,       /*  "   */
       8*256  +  8,          / * " * / 
         9* 256 +  9 ,         /*" */
       1 0* 256  + 10 ,        /* "  */ 
       11* 25 6 + 11,          /*  "  */
       12*25 6 +  12,        / *  "  */       100*25 6 +  13 ,        /*   ye l lo w u p  to 1 00 m e ters */
   5 00 
, another_foot.
In any_case, a quick glance_at the_gif_suggests that_my_naive interpretation of_the data's lat,lon_grid is, in all_likelihood, generally more-or-less_correct._And I probably don't need anything more accurate/precise for the intended purpose. But it_would_be nice_(and_I'd_still like) to have more_thorough documentation than what's cited_above. Anybody_have that info, or just a link to_it_would be great._Thanks.
     E d i t # 2_ ------------------ 
Just to illustrate the_intended use, below's_an_animation,_focusing on the Florida_region of the f10g tile. Each_successive frame raises sea level (actually,_lowers the elevation of each land pixel,_leaving ocean unchanged) by one meter._The first frame is raw_data, and_there are 30 frames in_all, and then_repeat. Of_course, one meter_times 30 is kind of extreme,_but the NOAA_data's in meters, so I don't_immediately_have any finer_vertical_resolution_available. And_it's just a_prototype_illustration (but_I_know where I'm buying my retirement_home:).

The_colortable/colorkey is also different than the first_gif above,
with light_green-->dark_green for_the_first twelve meters, and_then yellow up to 100_meters, as follows
  int colorkey2[99]_= {
_ _       0*256 +  0,_     _   _/* sea_surface_and below is_0=blue_*/
 _      _ 1*256_+  1,   _   __  /* 1-12 meters are_shades of green */
  _    ___2*256 +  2, _     _  _/*  "  */
  __     _3*256_+  3,   ___    _/*  "  */
 _        4*256_+  4,_    ___   /*  "  */
  _ _  _  5*256 +  5,    _      /*_ "  */
       _  6*256 +  6,  _      _ /*  "__*/
      ____7*256 + _7,  _  _ _  _/* _"  */
__        8*256 +  8,      _    /* _"  */
  __  _   9*256_+  9,     _     /*  " _*/
_ _   _ _10*256 +_10,  _ _ _ _  /*  "  */
__       11*256 +_11,___  _  _  /*_ " _*/
_     _  12*256_+ 12,  _        /* _"  */
        100*256 + 13,    _ _   _/* _yellow_up to 100 meters */
 _ _    500