关于*.E00格式数据的属性字段值的问题

楼主^#

更多发布于：2005-11-04 17:03

*.E00格式数据的属性字段个数有时和字段值的个数不相等，可见下例，有AREA、PERIMETER 、region# 、region-ID、CODE五个字段，可是对应的字段值却只有4列，也就是少了region#和region-ID中的一个字段的值，这是何解？ 
region.PAT XX 5 5 30 911 AREA 8-1 14-1 18 5 60-1 -1 -1-1 1- PERIMETER 8-1 94-1 18 5 60-1 -1 -1-1 2- region# 4-1 174-1 5-1 50-1 -1 -1-1 3- region-ID 4-1 214-1 5-1 50-1 -1 -1-1 4- CODE 6-1 254-1 6-1 20-1 -1 -1-1 5- 4.25016993999714030e+02 8.44438372437667230e+01 1 0141101 1.58659174867090770e+02 5.36975600173641820e+01 2 0141161 3.84837713999906550e+02 7.96368014029537790e+01 3 0141101 3.58104437999892980e+02 7.63858382160677820e+01 4 0141101
 。。。。。。。。。。。。。。
 6.57636000000056810e+01 3.34293680284682890e+01 910 0141161 7.54623999993782490e+01 3.74090222359493650e+01 911 0141200
找到的E00格式数据的说明，都没有对此作解释，不得其解，请各位高手多多指点啊！

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何熙颖路人甲注册日期2004-10-22 发帖数71 QQ 铜币439枚威望0点贡献值0点银元0个加关注写私信	1楼^# 发布于：2005-11-05 09:07 <P>哭，怎么没有人理我？呜呜呜</P>
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gis 管理员注册日期2003-07-16 发帖数15945 QQ554730525 铜币25337枚威望15352点贡献值0点银元0个加关注写私信	2楼^# 发布于：2005-11-07 12:34 <P>你找到的数据格式说明是这个吗:http://avce00.maptools.org/e00compr/index.html</P>
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何熙颖路人甲注册日期2004-10-22 发帖数71 QQ 铜币439枚威望0点贡献值0点银元0个加关注写私信	3楼^# 发布于：2005-11-07 15:38 <P>我无法访问到这个网页。</P> <P>我有一些e00的数据，打开后都有发现实际字段值的个数小于相应字段说明的字段个数，这个问题的原因是什么？仍在郁闷中。。。</P> <P>如果您知道，恳求指点迷津。</P><br> [此贴子已经被作者于2005-11-7 15:40:00编辑过]
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4楼^#

发布于：2005-11-07 15:39

上面的地址里有比较详细的读写转换eoo数据的类
在这里贴出,希望你能下载到.
<H2>A Library to Read/Write Compressed E00 Files</H2>
E00Compr is an <a href="http://opensource.org/" target="_blank" >Open Source</A> (i.e. Free!) ANSI-C library to compress and uncompress Arc/Info Export (E00) files.
The C library can be easily plugged into existing E00 translators to add support for compressed E00 files simply by replacing the existing translator's read/write function by the E00ReadNextLine() and E00WriteNextLine() functions provided by the library. See the <a href="http://avce00.maptools.org/e00compr/e00compr.html" target="_blank" >library documentation</A> for all the details.
For those who do not need a library but simply want to convert some files, the package includes the <a href="http://avce00.maptools.org/e00compr/e00compr.html#e00conv" target="_blank" >"E00CONV" conversion program</A> that allows you to convert a E00 file to and from any compression level (NONE, PARTIAL or FULL).
The latest version of the library is version 1.0.0 from September 17, 2005.

<UL>
<LI><a href="http://avce00.maptools.org/e00compr/e00compr.html" target="_blank" >E00Compr documentation</A>
 
<LI><a href="http://avce00.maptools.org/e00compr/HISTORY.TXT" target="_blank" >HISTORY.TXT</A> - revision history

<LI><a href="http://avce00.maptools.org/dl/e00compr-1.0.0.tar.gz" target="_blank" >e00compr-1.0.0.tar.gz</A> (or <a href="http://avce00.maptools.org/dl/e00compr-1.0.0.zip" target="_blank" >e00compr-1.0.0.zip</A>): The latest version of the package, including source code and documentation.

<LI><a href="http://avce00.maptools.org/e00compr/e00conv.exe" target="_blank" >E00CONV.EXE</A>: A precompiled version of the <a href="http://avce00.maptools.org/e00compr/e00compr.html#e00conv" target="_blank" >"E00CONV conversion program</A> for WIN32 (DOS executable under Windows 95/98/NT) </LI></UL>
See als

<UL>
<LI><a href="http://avce00.maptools.org/avce00/index.html" target="_blank" >AVCE00</A> - The C library that makes Arc/Info (binary) vector coverages appear as ASCII E00 files!

<LI><a href="http://avce00.maptools.org/gistrans_links.html" target="_blank" >Other GIS translators and utilities</A>, format information, etc. </LI></UL>
Comments, suggestions (and bug reports of course!) are always welcome... please keep in mind that I may not have time to respond to all Emails (but I'll do my best).

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何熙颖路人甲注册日期2004-10-22 发帖数71 QQ 铜币439枚威望0点贡献值0点银元0个加关注写私信	5楼^# 发布于：2005-11-07 15:43 <P>真是不错的地方，先谢谢您，我去看看</P> <P><img src="images/post/smile/dvbbs/em02.gif" /> </P>
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gis 管理员注册日期2003-07-16 发帖数15945 QQ554730525 铜币25337枚威望15352点贡献值0点银元0个加关注写私信	6楼^# 发布于：2005-11-07 15:49 希望有结果到这里发布下成果和经验，这个问题还是大家比较需要的:)
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何熙颖路人甲注册日期2004-10-22 发帖数71 QQ 铜币439枚威望0点贡献值0点银元0个加关注写私信	7楼^# 发布于：2005-11-07 16:08 <P>我看了一下那个网站，那里只说了怎么读写的方法，但是涉及到内核数据如何读取的问题,却略了。</P> <P>嗯，如果问题解决了，一定过来说明的。</P> [此贴子已经被作者于2005-11-7 16:17:52编辑过]
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8楼^#

发布于：2005-11-07 16:33

这个是以前看过的一个格式说明,发上做参考
下载地址:
<a href="attachment/2005-11/200511716371527846.txt">2005-11/200511716371527846.txt</a>
 ANALYSIS
 OF
 ARC EXPORT FILE FORMAT FOR
 ARC/INFO (REV 6.1.1) 
 TABLE OF CONTENTS
1 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . 1
2 OVERALL ORGANIZATION. . . . . . . . . . . . . . . . . . . 2
3 ARC FILE FORMATS. . . . . . . . . . . . . . . . . . . . . 3 3.1 ARC. . . . . . . . . . . . . . . . . . . . . . . . . 4 3.2 CNT. . . . . . . . . . . . . . . . . . . . . . . . . 6 3.3 LAB. . . . . . . . . . . . . . . . . . . . . . . . . 7 3.4 LOG. . . . . . . . . . . . . . . . . . . . . . . . . 8 3.5 PAL. . . . . . . . . . . . . . . . . . . . . . . . . 9 3.6 PRJ. . . . . . . . . . . . . . . . . . . . . . . . . 11 3.7 SIN. . . . . . . . . . . . . . . . . . . . . . . . . 12 3.8 TOL. . . . . . . . . . . . . . . . . . . . . . . . . 13
4 INFO FILE FORMATS . . . . . . . . . . . . . . . . . . . . 14 4.1 .AAT . . . . . . . . . . . . . . . . . . . . . . . . 15 4.2 .ACODE . . . . . . . . . . . . . . . . . . . . . . . 16 4.3 .BND . . . . . . . . . . . . . . . . . . . . . . . . 17 4.4 .PAT . . . . . . . . . . . . . . . . . . . . . . . . 18 4.5 .PCODE . . . . . . . . . . . . . . . . . . . . . . . 19 4.6 .TIC . . . . . . . . . . . . . . . . . . . . . . . . 20
5 CONCLUSION. . . . . . . . . . . . . . . . . . . . . . . . 21
APPENDIX A: SAMPLE EXPORT FILE BEFORE TOPOLOGY. . . . . . . . 22
APPENDIX B: SAMPLE EXPORT FILE AFTER POLYGON TOPOLOGY . . . . 24
APPENDIX C: SAMPLE EXPORT FILE AFTER LINE TOPOLOGY. . . . . . 27
APPENDIX D: SAMPLE EXPORT FILE FOR POINT COVERAGE . . . . . . 30
APPENDIX E: SAMPLE EXPORT FILE FOR SINGLE-PRECISION COVERAGE. . . . . . . . . . . . . . . . . . . . . . . . . 35
APPENDIX F: SAMPLE EXPORT FILE FOR DOUBLE-PRECISION COVERAGE. . . . . . . . . . . . . . . . . . . . . . . . . 37 1 INTRODUCTION
 Note: ESRI considers the export/import file format to be proprietary. As a consequence, the identified format can only constitute a "best guess" and must always be considered as tentative and subject to revision, as more is learned.
It appears that all ARC/INFO files except user-created lookup tables are exported, including .ACODE and .PCODE. 2 OVERALL ORGANIZATION
The export file begins with a line with three fields.
 1- an initial 'EXP' 2- what appears to be a constant of '0' 3- the pathname for the creation of the export file
The export file ends with a line beginning 'EOS'.
The ARC files are included first, in alphabetical order except for the SIN, LOG, and PRJ files which occur last. Then the INFO files are included in alphabetical order.
The beginning of each ARC file is indicated by the file name (a three-character identifier) followed by ' 2' for single- precision or ' 3' for double-precision. Single-precision carries 8 digits, and double-precision carries 15 digits.
Each ARC file ends with a line of seven numbers beginning with a -1 and followed by six zeros, except the SIN, LOG, and PRJ files which end in 'EOX', 'EOL', and 'EOP', respectively. The LAB file uses a slight variation of this -1 ending line (see below). The format for each ARC file is specific to that type of file. These formats are covered below.
The beginning of the INFO file section is indicated by 'IFO 2', and its end is indicated by 'EOI'. The INFO files each begin with the file name. For example, the polygon attribute table would be 'STDFIG24C.PAT' on a line by itself. The format is the same for every INFO file. This format is given below. 3 ARC FILE FORMATS
Formats will be given for the most common ARC files:
 ARC CNT LAB LOG PAL PAR PRJ SIN TOL

[此贴子已经被作者于2005-11-7 16:37:41编辑过]

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9楼^#

发布于：2005-11-07 16:33

3.1 ARC
The ARC (arc coordinates and topology) file consists of repeating sets of arc information. The first line of each set has seven numbers:
 1. coverage# 2. coverage-ID 3. from node 4. to node 5. left polygon 6. right polygon 7. number of coordinates
The subsequent lines of a set are the coordinates with two x-y pairs per line, if the coverage is single-precision. If there are an odd number of coordinates, the last line will have only one x-y pair. Double-precision puts one coordinate pair on each line.
An example of an actual ARC section follows:
ARC 2 1 2 2 1 1 2 2 3.4029994E+05 4.1001998E+06 3.4009988E+05 4.1002000E+06 2 3 3 2 3 2 2 3.4050000E+05 4.1001998E+06 3.4029994E+05 4.1001998E+06 3 1 1 4 1 2 4 3.4009988E+05 4.1002000E+06 3.4040006E+05 4.1003995E+06 3.4090012E+05 4.1002000E+06 3.4070003E+05 4.1001995E+06 4 4 4 3 4 2 2 3.4070003E+05 4.1001995E+06 3.4050000E+05 4.1001998E+06 5 6 3 4 4 3 3 3.4050000E+05 4.1001998E+06 3.4059997E+05 4.1001002E+06 3.4070003E+05 4.1001995E+06 6 7 4 5 1 3 3 3.4070003E+05 4.1001995E+06 3.4079997E+05 4.1000002E+06 3.4019978E+05 4.1000000E+06 7 5 5 2 1 3 2 3.4019978E+05 4.1000000E+06 3.4029994E+05 4.1001998E+06 -1 0 0 0 0 0 0
An example of a double-precision ARC section follows:
ARC 3 1 0 0 0 0 0 7 3.40200000000000E+05 4.10000000000000E+06 3.40300000000000E+05 4.10020000000000E+06 3.40500000000000E+05 4.10020000000000E+06 3.40600000000000E+05 4.10010000000000E+06 3.40700000000000E+05 4.10020000000000E+06 3.40800000000000E+05 4.10000000000000E+06 3.40200000000000E+05 4.10000000000000E+06 2 0 0 0 0 0 4 3.40100000000000E+05 4.10020000000000E+06 3.40400000000000E+05 4.10040000000000E+06 3.40900000000000E+05 4.10020000000000E+06 3.40100000000000E+05 4.10020000000000E+06 -1 0 0 0 0 0 0

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