blocks|key|2999493|text|尝试使用以下命令：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2999494|topojson+-o+final.json+-e+data.tsv+--id-property=code_2,code+-p+code_2,state=name+--+topojson.json|code-block|syntax|javascript|2999495|哪一项应该输出：|2999496|{
++++"type":+"Topology",
++++"transform":+{
++++++++"scale":+[
++++++++++++0.000016880209206372492,
++++++++++++0.000007005401010148724
++++++++],
++++++++"translate":+[
++++++++++++-1.8418800213354616,
++++++++++++51.15278777877789
++++++++]
++++},
++++"objects":+{
++++++++"states":+{
++++++++++++"type":+"GeometryCollection",
++++++++++++"geometries":+[
++++++++++++++++{
++++++++++++++++++++"type":+"Polygon",
++++++++++++++++++++"arcs":+[
++++++++++++++++++++++++[
++++++++++++++++++++++++++++0
++++++++++++++++++++++++]
++++++++++++++++++++],
++++++++++++++++++++"id":+"AK",
++++++++++++++++++++"properties":+{
++++++++++++++++++++++++"code_2":+"AK",
++++++++++++++++++++++++"state":+"Alaska"
++++++++++++++++++++}
++++++++++++++++}
++++++++++++]
++++++++}
++++},
++++"arcs":+[
++++++++[
++++++++++++[
++++++++++++++++0,
++++++++++++++++588
++++++++++++],
++++++++++++[
++++++++++++++++92,
++++++++++++++++-294
++++++++++++],
++++++++++++[
++++++++++++++++91,
++++++++++++++++-294
++++++++++++],
++++++++++++[
++++++++++++++++-183,
++++++++++++++++588
++++++++++++]
++++++++]
++++]
}|2999497|从Command+Line+Reference+wiki|offset|length|2999498|2999499|+--+id+-+property+要提升为几何id的要素属性的名称|blockquote|style|BOLD|2999500|2999501|2999502|通过将code_2属性与此选项一起使用，可以将其提升为功能ID。|CODE|2999503|2999504|在输入属性名前面添加一个%2B以将其值强制转换为一个数字。|2999505|2999506|2999507|另外：|2999508|2999509|如果--id-property引用的特性为空或未定义，则输出几何对象中的这些特性将被省略为。因此，如果输入要素没有具有指定名称的属性，则生成的对象可能没有定义的ID。|2999510|2999511|2999512|因此，当您使用%2Bcode和%2Bcode_2时，它们可能是undefined，因为您不能将AK字符串值转换为数字。|2999513|2999514|在这里，输入属性"FIPS“被强制为一个数字并用作特性标识符；同样，名为"FIPS”的列被用作CSV文件中的标识符。(如果CSV文件对特征标识符使用不同的列名，则可以指定多个id属性，如--id-property=%2BFIPS,%2Bid。)|2999515|2999516|2999517|这就是您必须将code添加到--id-property=code_2,code选项的原因。这就是映射的方式(来自topojson.json的code_2和来自data.tsv的code列)。|2999518|然后，从外部数据文件unemployment.tsv生成输出属性“|2999519|”，该文件定义了输入属性"rate“。|2999520|2999521|2999522|在我们的示例中，-p+code_2,state=name指定我们将保留code_2属性，并将name属性重命名为state。前面提到的文档维基中的属性和外部属性部分在这个问题上提供了非常丰富的信息。|2999523|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/mbostock/topojson/wiki/Command-Line-Reference^0|0|0|0|0|1|R|0|0|0|1|H|0|0|0|3|6|0|0|C|1|0|0|0|0|0|2|D|16|3|0|0|0|7|5|D|7|R|9|17|2|0|0|2L|N|0|0|0|7|4|E|P|1Y|6|2G|4|0|0|0|0|0|8|K|Z|6|1A|4|1K|5|21|2|24|4|0^^$0|@$1|2|3|4|5|6|7|20|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|21|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|22|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|23|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|24|8|@]|9|@$M|25|N|26|1|27]]|A|$]]|$1|O|3|-4|5|6|7|28|8|@]|9|@]|A|$]]|$1|P|3|Q|5|R|7|29|8|@$M|2A|N|2B|S|T]]|9|@]|A|$]]|$1|U|3|-4|5|6|7|2C|8|@]|9|@]|A|$]]|$1|V|3|-4|5|6|7|2D|8|@]|9|@]|A|$]]|$1|W|3|X|5|6|7|2E|8|@$M|2F|N|2G|S|Y]]|9|@]|A|$]]|$1|Z|3|-4|5|6|7|2H|8|@]|9|@]|A|$]]|$1|10|3|11|5|R|7|2I|8|@$M|2J|N|2K|S|T]]|9|@]|A|$]]|$1|12|3|-4|5|6|7|2L|8|@]|9|@]|A|$]]|$1|13|3|-4|5|6|7|2M|8|@]|9|@]|A|$]]|$1|14|3|15|5|6|7|2N|8|@]|9|@]|A|$]]|$1|16|3|-4|5|6|7|2O|8|@]|9|@]|A|$]]|$1|17|3|18|5|R|7|2P|8|@$M|2Q|N|2R|S|T]|$M|2S|N|2T|S|T]]|9|@]|A|$]]|$1|19|3|-4|5|6|7|2U|8|@]|9|@]|A|$]]|$1|1A|3|-4|5|6|7|2V|8|@]|9|@]|A|$]]|$1|1B|3|1C|5|6|7|2W|8|@$M|2X|N|2Y|S|Y]|$M|2Z|N|30|S|Y]|$M|31|N|32|S|Y]|$M|33|N|34|S|Y]]|9|@]|A|$]]|$1|1D|3|-4|5|6|7|35|8|@]|9|@]|A|$]]|$1|1E|3|1F|5|R|7|36|8|@$M|37|N|38|S|Y]]|9|@]|A|$]]|$1|1G|3|-4|5|6|7|39|8|@]|9|@]|A|$]]|$1|1H|3|-4|5|6|7|3A|8|@]|9|@]|A|$]]|$1|1I|3|1J|5|6|7|3B|8|@$M|3C|N|3D|S|Y]|$M|3E|N|3F|S|Y]|$M|3G|N|3H|S|Y]|$M|3I|N|3J|S|Y]]|9|@]|A|$]]|$1|1K|3|1L|5|6|7|3K|8|@]|9|@]|A|$]]|$1|1M|3|1N|5|R|7|3L|8|@]|9|@]|A|$]]|$1|1O|3|-4|5|6|7|3M|8|@]|9|@]|A|$]]|$1|1P|3|-4|5|6|7|3N|8|@]|9|@]|A|$]]|$1|1Q|3|1R|5|6|7|3O|8|@$M|3P|N|3Q|S|Y]|$M|3R|N|3S|S|Y]|$M|3T|N|3U|S|Y]|$M|3V|N|3W|S|Y]|$M|3X|N|3Y|S|T]|$M|3Z|N|40|S|T]]|9|@]|A|$]]|$1|1S|3|-4|5|6|7|41|8|@]|9|@]|A|$]]]|1T|$1U|$5|1V|1W|1X|A|$1Y|1Z]]]]

Try using this:

<pre><code>topojson -o final.json -e data.tsv --id-property=code_2,code -p code_2,state=name -- topojson.json
</code></pre>

Which should output:

<pre><code>{
 "type": "Topology",
 "transform": {
 "scale": [
 0.000016880209206372492,
 0.000007005401010148724
 ],
 "translate": [
 -1.8418800213354616,
 51.15278777877789
 ]
 },
 "objects": {
 "states": {
 "type": "GeometryCollection",
 "geometries": [
 {
 "type": "Polygon",
 "arcs": [
 [
 0
 ]
 ],
 "id": "AK",
 "properties": {
 "code_2": "AK",
 "state": "Alaska"
 }
 }
 ]
 }
 },
 "arcs": [
 [
 [
 0,
 588
 ],
 [
 92,
 -294
 ],
 [
 91,
 -294
 ],
 [
 -183,
 588
 ]
 ]
 ]
}
</code></pre>

From the <a href="https://github.com/mbostock/topojson/wiki/Command-Line-Reference">Command Line Reference wiki</a>:

<blockquote>
 --id-property name of feature property to promote to geometry id
</blockquote>

By using the <code>code_2</code> property with this option, you promote it as the feature ID.

<blockquote>
 Prepend a + in front of the input property name to coerce its value to a number.
</blockquote>

Plus:

<blockquote>
 If the properties referenced by --id-property are null or undefined,
 they are omitted from the output geometry object. Thus, the generated
 objects may not have a defined ID if the input features did not have a
 property with the specified name.
</blockquote>

So, when you are using <code>+code</code> and <code>+code_2</code>, they are probably <code>undefined</code>, as you can't convert the <code>AK</code> string value to a number.

<blockquote>
 Here, the input property "FIPS" is coerced to a number and used as the
 feature identifier; likewise, the column named "FIPS" is used as the
 identifier in the CSV file. (If your CSV file uses a different column
 name for the feature identifier, you can specify multiple id
 properties, such as <code>--id-property=+FIPS,+id</code>.)
</blockquote>

That's why you have to add the <code>code</code> to the <code>--id-property=code_2,code</code> option. This is how the mapping is made (the <code>code_2</code> from topojson.json and the <code>code</code> column from data.tsv).

<blockquote>
 Then, the output property "unemployment" is generated from the
 external data file, unemployment.tsv, which defines the input property
 "rate"
</blockquote>

In our case, <code>-p code_2,state=name</code> specifies that we will preserve the <code>code_2</code> property and we will rename the <code>name</code> property to <code>state</code>. The Properties and External Properties sections in the aforementioned documentation wiki are pretty informative on the matter.

blocks|key|2999613|text|topojson包已被弃用。以下步骤基于command-line+cartography工作流。这些接口更灵活，但使用起来有点复杂。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2999614|安装依赖项：|2999615|npm+install+d3-dsv+ndjson-cli|style|CODE|2999616|将node_modules/.bin目录添加到路径中，以便您可以轻松运行以下命令：|2999617|PATH=$(npm+bin):$PATH|2999618|将tsv文件转换为换行符分隔的json文件：|2999619|tsv2json+data.tsv+-n+>+data.ndjson|2999620|{"id":"1","code":"AL","name":"Alabama"}
{"id":"2","code":"AK","name":"Alaska"}|code-block|syntax|javascript|2999621|将id列解析为数字：|2999622|ndjson-map+'{id:+%2Bd.id,+code:+d.code,+name:+d.name}'+<+data.ndjson+>+data_parsed.ndjson|2999623|{"id":1,"code":"AL","name":"Alabama"}
{"id":2,"code":"AK","name":"Alaska"}|2999624|提取topojson文件的几何图形：|2999625|ndjson-cat+topojson.json+%7C+ndjson-split+'d.objects.states.geometries'+>+topojson_geometries.ndjson|2999626|{"type":"Polygon","arcs":[[0]],"properties":{"code_2":"AK"}}
{"type":"Polygon","arcs":[[1]],"properties":{"code_2":"AL"}}|2999627|加入两个以新行分隔的json文件：|2999628|ndjson-join+'d.properties.code_2'+'d.code'+topojson_geometries.ndjson+data_parsed.ndjson+>+geometries_data_join.ndjson|2999629|[{"type":"Polygon","arcs":[[0]],"properties":{"code_2":"AK"}},{"id":2,"code":"AK","name":"Alaska"}]
[{"type":"Polygon","arcs":[[1]],"properties":{"code_2":"AL"}},{"id":1,"code":"AL","name":"Alabama"}]|2999630|将name列添加到topojson属性，并仅保留topojson几何图形：|2999631|ndjson-map+'d[0].properties.name+=+d[1].name,+d[0]'+<+geometries_data_join.ndjson+>+geometries_data_merge.ndjson|2999632|{"type":"Polygon","arcs":[[0]],"properties":{"code_2":"AK","name":"Alaska"}}
{"type":"Polygon","arcs":[[1]],"properties":{"code_2":"AL","name":"Alabama"}}|2999633|将之前的结果转换为数组，并将其与原始topojson文件连接：|2999634|ndjson-join+<(ndjson-cat+topojson.json)+<(ndjson-reduce+<+geometries_data_merge.ndjson)+>+topojson_concat.ndjson|2999635|[{
++++"type":+"Topology",
++++"transform":+{
++++++++"scale":+[0.0015484881821515486,+0.0010301030103010299],
++++++++"translate":+[-5.491666666666662,+41.008333333333354]
++++},
++++"objects":+{
++++++++"states":+{
++++++++++++"type":+"GeometryCollection",
++++++++++++"geometries":+[{
++++++++++++++++++++"type":+"Polygon",
++++++++++++++++++++"arcs":+[[0]],
++++++++++++++++++++"properties":+{
++++++++++++++++++++++++"code_2":+"AK"
++++++++++++++++++++}
++++++++++++++++},+{
++++++++++++++++++++"type":+"Polygon",
++++++++++++++++++++"arcs":+[[1]],
++++++++++++++++++++"properties":+{
++++++++++++++++++++++++"code_2":+"AL"
++++++++++++++++++++}
++++++++++++++++}
++++++++++++]
++++++++}
++++},
++++"arcs":+[[[2466,+9916],+[-25,+-5],+[3,+-13]],+[[2357,+9852],+[1,+-2],+[1,+-2]]]
++++},+[{
++++++++++++"type":+"Polygon",
++++++++++++"arcs":+[[0]],
++++++++++++"properties":+{
++++++++++++++++"code_2":+"AK",
++++++++++++++++"name":+"Alaska"
++++++++++++}
++++++++},+{
++++++++++++"type":+"Polygon",
++++++++++++"arcs":+[[1]],
++++++++++++"properties":+{
++++++++++++++++"code_2":+"AL",
++++++++++++++++"name":+"Alabama"
++++++++++++}
++++++++}
++++]
]|2999636|覆盖原始topojson文件的几何，并将其保存为普通的json文件：|2999637|ndjson-map+'d[0].objects.states.geometries+=+d[1],+d[0]'+<+topojson_concat.ndjson+>+topojson_data.json|2999638|{
++++"type":+"Topology",
++++"transform":+{
++++++++"scale":+[0.0015484881821515486,+0.0010301030103010299],
++++++++"translate":+[-5.491666666666662,+41.008333333333354]
++++},
++++"objects":+{
++++++++"states":+{
++++++++++++"type":+"GeometryCollection",
++++++++++++"geometries":+[{
++++++++++++++++++++"type":+"Polygon",
++++++++++++++++++++"arcs":+[[0]],
++++++++++++++++++++"properties":+{
++++++++++++++++++++++++"code_2":+"AK",
++++++++++++++++++++++++"name":+"Alaska"
++++++++++++++++++++}
++++++++++++++++},+{
++++++++++++++++++++"type":+"Polygon",
++++++++++++++++++++"arcs":+[[1]],
++++++++++++++++++++"properties":+{
++++++++++++++++++++++++"code_2":+"AL",
++++++++++++++++++++++++"name":+"Alabama"
++++++++++++++++++++}
++++++++++++++++}
++++++++++++]
++++++++}
++++},
++++"arcs":+[[[2466,+9916],+[-25,+-5],+[3,+-13]],+[[2357,+9852],+[1,+-2],+[1,+-2]]]
}|2999639|一行中的所有命令：|2999640|ndjson-join+<(ndjson-cat+topojson.json)+<(ndjson-join+'d.properties.code_2'+'d.code'+<(ndjson-cat+topojson.json+%7C+ndjson-split+'d.objects.states.geometries')+<(tsv2json+data.tsv+-n+%7C+ndjson-map+'{id:+%2Bd.id,+code:+d.code,+name:+d.name}')+%7C+ndjson-map+'d[0].properties.name+=+d[1].name,+d[0]'+%7C+ndjson-reduce)+%7C+ndjson-map+'d[0].objects.states.geometries+=+d[1],+d[0]'+>+topojson_data.json|2999641|备注：|2999642|2999643|我交换了topojson文件中的"AK“和"AL”，以检查连接是否真的有效。|unordered-list-item|2999644|最后一个命令(在一行之前)仅适用于原始输出，而不适用于给定的漂亮打印版本，其中包含换行符。|2999645|我在Linux的子系统上测试了工作流，因为ndjson-map目前似乎在Windows上不能正常工作。|2999646|2999647|entityMap|0|LINK|mutability|MUTABLE|url|https://www.npmjs.com/package/topojson|1|https://medium.com/@mbostock/command-line-cartography-part-2-c3a82c5c0f3^0|0|8|0|K|O|1|0|0|0|T|0|0|0|L|0|0|0|Y|0|0|0|0|2F|0|0|0|0|2Q|0|0|0|0|3A|0|0|0|0|34|0|0|0|0|34|0|0|0|0|2U|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|2L|8|@]|9|@$A|2M|B|2N|1|2O]|$A|2P|B|2Q|1|2R]]|C|$]]|$1|D|3|E|5|6|7|2S|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|2T|8|@$A|2U|B|2V|H|I]]|9|@]|C|$]]|$1|J|3|K|5|6|7|2W|8|@]|9|@]|C|$]]|$1|L|3|M|5|6|7|2X|8|@$A|2Y|B|2Z|H|I]]|9|@]|C|$]]|$1|N|3|O|5|6|7|30|8|@]|9|@]|C|$]]|$1|P|3|Q|5|6|7|31|8|@$A|32|B|33|H|I]]|9|@]|C|$]]|$1|R|3|S|5|T|7|34|8|@]|9|@]|C|$U|V]]|$1|W|3|X|5|6|7|35|8|@]|9|@]|C|$]]|$1|Y|3|Z|5|6|7|36|8|@$A|37|B|38|H|I]]|9|@]|C|$]]|$1|10|3|11|5|T|7|39|8|@]|9|@]|C|$U|V]]|$1|12|3|13|5|6|7|3A|8|@]|9|@]|C|$]]|$1|14|3|15|5|6|7|3B|8|@$A|3C|B|3D|H|I]]|9|@]|C|$]]|$1|16|3|17|5|T|7|3E|8|@]|9|@]|C|$U|V]]|$1|18|3|19|5|6|7|3F|8|@]|9|@]|C|$]]|$1|1A|3|1B|5|6|7|3G|8|@$A|3H|B|3I|H|I]]|9|@]|C|$]]|$1|1C|3|1D|5|T|7|3J|8|@]|9|@]|C|$U|V]]|$1|1E|3|1F|5|6|7|3K|8|@]|9|@]|C|$]]|$1|1G|3|1H|5|6|7|3L|8|@$A|3M|B|3N|H|I]]|9|@]|C|$]]|$1|1I|3|1J|5|T|7|3O|8|@]|9|@]|C|$U|V]]|$1|1K|3|1L|5|6|7|3P|8|@]|9|@]|C|$]]|$1|1M|3|1N|5|6|7|3Q|8|@$A|3R|B|3S|H|I]]|9|@]|C|$]]|$1|1O|3|1P|5|T|7|3T|8|@]|9|@]|C|$U|V]]|$1|1Q|3|1R|5|6|7|3U|8|@]|9|@]|C|$]]|$1|1S|3|1T|5|6|7|3V|8|@$A|3W|B|3X|H|I]]|9|@]|C|$]]|$1|1U|3|1V|5|T|7|3Y|8|@]|9|@]|C|$U|V]]|$1|1W|3|1X|5|6|7|3Z|8|@]|9|@]|C|$]]|$1|1Y|3|1Z|5|T|7|40|8|@]|9|@]|C|$U|V]]|$1|20|3|21|5|6|7|41|8|@]|9|@]|C|$]]|$1|22|3|-4|5|6|7|42|8|@]|9|@]|C|$]]|$1|23|3|24|5|25|7|43|8|@]|9|@]|C|$]]|$1|26|3|27|5|25|7|44|8|@]|9|@]|C|$]]|$1|28|3|29|5|25|7|45|8|@]|9|@]|C|$]]|$1|2A|3|-4|5|6|7|46|8|@]|9|@]|C|$]]|$1|2B|3|-4|5|6|7|47|8|@]|9|@]|C|$]]]|2C|$2D|$5|2E|2F|2G|C|$2H|2I]]|2J|$5|2E|2F|2G|C|$2H|2K]]]]

The <a href="https://www.npmjs.com/package/topojson" rel="nofollow noreferrer">topojson</a> package has been deprecated. The following steps are based on the <a href="https://medium.com/@mbostock/command-line-cartography-part-2-c3a82c5c0f3" rel="nofollow noreferrer">command-line cartography</a> workflow. These interfaces are more flexible, but a little bit more complicated to use.
Install dependencies:
<code>npm install d3-dsv ndjson-cli</code>
Add the node_modules/.bin directory to the path so that you can easily run the commands:
<code>PATH=$(npm bin):$PATH</code>
Convert the tsv file into a newline-delimited json file:
<code>tsv2json data.tsv -n &gt; data.ndjson</code>
<pre><code>{&quot;id&quot;:&quot;1&quot;,&quot;code&quot;:&quot;AL&quot;,&quot;name&quot;:&quot;Alabama&quot;}
{&quot;id&quot;:&quot;2&quot;,&quot;code&quot;:&quot;AK&quot;,&quot;name&quot;:&quot;Alaska&quot;}
</code></pre>
Parse the id column as a number:
<code>ndjson-map '{id: +d.id, code: d.code, name: d.name}' &lt; data.ndjson &gt; data_parsed.ndjson</code>
<pre><code>{&quot;id&quot;:1,&quot;code&quot;:&quot;AL&quot;,&quot;name&quot;:&quot;Alabama&quot;}
{&quot;id&quot;:2,&quot;code&quot;:&quot;AK&quot;,&quot;name&quot;:&quot;Alaska&quot;}
</code></pre>
Extract the geometries of the topojson file:
<code>ndjson-cat topojson.json | ndjson-split 'd.objects.states.geometries' &gt; topojson_geometries.ndjson</code>
<pre><code>{&quot;type&quot;:&quot;Polygon&quot;,&quot;arcs&quot;:[[0]],&quot;properties&quot;:{&quot;code_2&quot;:&quot;AK&quot;}}
{&quot;type&quot;:&quot;Polygon&quot;,&quot;arcs&quot;:[[1]],&quot;properties&quot;:{&quot;code_2&quot;:&quot;AL&quot;}}
</code></pre>
Join both newline-delimited json files:
<code>ndjson-join 'd.properties.code_2' 'd.code' topojson_geometries.ndjson data_parsed.ndjson &gt; geometries_data_join.ndjson</code>
<pre><code>[{&quot;type&quot;:&quot;Polygon&quot;,&quot;arcs&quot;:[[0]],&quot;properties&quot;:{&quot;code_2&quot;:&quot;AK&quot;}},{&quot;id&quot;:2,&quot;code&quot;:&quot;AK&quot;,&quot;name&quot;:&quot;Alaska&quot;}]
[{&quot;type&quot;:&quot;Polygon&quot;,&quot;arcs&quot;:[[1]],&quot;properties&quot;:{&quot;code_2&quot;:&quot;AL&quot;}},{&quot;id&quot;:1,&quot;code&quot;:&quot;AL&quot;,&quot;name&quot;:&quot;Alabama&quot;}]
</code></pre>
Add the name column to the topojson properties and only keep the topojson geometries:
<code>ndjson-map 'd[0].properties.name = d[1].name, d[0]' &lt; geometries_data_join.ndjson &gt; geometries_data_merge.ndjson</code>
<pre><code>{&quot;type&quot;:&quot;Polygon&quot;,&quot;arcs&quot;:[[0]],&quot;properties&quot;:{&quot;code_2&quot;:&quot;AK&quot;,&quot;name&quot;:&quot;Alaska&quot;}}
{&quot;type&quot;:&quot;Polygon&quot;,&quot;arcs&quot;:[[1]],&quot;properties&quot;:{&quot;code_2&quot;:&quot;AL&quot;,&quot;name&quot;:&quot;Alabama&quot;}}
</code></pre>
Convert the previous result into an array and concat it with the original topojson file:
<code>ndjson-join &lt;(ndjson-cat topojson.json) &lt;(ndjson-reduce &lt; geometries_data_merge.ndjson) &gt; topojson_concat.ndjson</code>
<pre><code>[{
 &quot;type&quot;: &quot;Topology&quot;,
 &quot;transform&quot;: {
 &quot;scale&quot;: [0.0015484881821515486, 0.0010301030103010299],
 &quot;translate&quot;: [-5.491666666666662, 41.008333333333354]
 },
 &quot;objects&quot;: {
 &quot;states&quot;: {
 &quot;type&quot;: &quot;GeometryCollection&quot;,
 &quot;geometries&quot;: [{
 &quot;type&quot;: &quot;Polygon&quot;,
 &quot;arcs&quot;: [[0]],
 &quot;properties&quot;: {
 &quot;code_2&quot;: &quot;AK&quot;
 }
 }, {
 &quot;type&quot;: &quot;Polygon&quot;,
 &quot;arcs&quot;: [[1]],
 &quot;properties&quot;: {
 &quot;code_2&quot;: &quot;AL&quot;
 }
 }
 ]
 }
 },
 &quot;arcs&quot;: [[[2466, 9916], [-25, -5], [3, -13]], [[2357, 9852], [1, -2], [1, -2]]]
 }, [{
 &quot;type&quot;: &quot;Polygon&quot;,
 &quot;arcs&quot;: [[0]],
 &quot;properties&quot;: {
 &quot;code_2&quot;: &quot;AK&quot;,
 &quot;name&quot;: &quot;Alaska&quot;
 }
 }, {
 &quot;type&quot;: &quot;Polygon&quot;,
 &quot;arcs&quot;: [[1]],
 &quot;properties&quot;: {
 &quot;code_2&quot;: &quot;AL&quot;,
 &quot;name&quot;: &quot;Alabama&quot;
 }
 }
 ]
]
</code></pre>
Overwrite the geometries of original topojson file and save it as a normal json file:
<code>ndjson-map 'd[0].objects.states.geometries = d[1], d[0]' &lt; topojson_concat.ndjson &gt; topojson_data.json</code>
<pre><code>{
 &quot;type&quot;: &quot;Topology&quot;,
 &quot;transform&quot;: {
 &quot;scale&quot;: [0.0015484881821515486, 0.0010301030103010299],
 &quot;translate&quot;: [-5.491666666666662, 41.008333333333354]
 },
 &quot;objects&quot;: {
 &quot;states&quot;: {
 &quot;type&quot;: &quot;GeometryCollection&quot;,
 &quot;geometries&quot;: [{
 &quot;type&quot;: &quot;Polygon&quot;,
 &quot;arcs&quot;: [[0]],
 &quot;properties&quot;: {
 &quot;code_2&quot;: &quot;AK&quot;,
 &quot;name&quot;: &quot;Alaska&quot;
 }
 }, {
 &quot;type&quot;: &quot;Polygon&quot;,
 &quot;arcs&quot;: [[1]],
 &quot;properties&quot;: {
 &quot;code_2&quot;: &quot;AL&quot;,
 &quot;name&quot;: &quot;Alabama&quot;
 }
 }
 ]
 }
 },
 &quot;arcs&quot;: [[[2466, 9916], [-25, -5], [3, -13]], [[2357, 9852], [1, -2], [1, -2]]]
}
</code></pre>
All commands in one line:
<pre><code>ndjson-join &lt;(ndjson-cat topojson.json) &lt;(ndjson-join 'd.properties.code_2' 'd.code' &lt;(ndjson-cat topojson.json | ndjson-split 'd.objects.states.geometries') &lt;(tsv2json data.tsv -n | ndjson-map '{id: +d.id, code: d.code, name: d.name}') | ndjson-map 'd[0].properties.name = d[1].name, d[0]' | ndjson-reduce) | ndjson-map 'd[0].objects.states.geometries = d[1], d[0]' &gt; topojson_data.json
</code></pre>
Notes:
<ul>
<li>I swapped &quot;AK&quot; and &quot;AL&quot; in the topojson file to check if the join really works.</li>
<li>The last command (before the one-liner) only works on the original output and not on the given pretty-printed version, which has newlines in it.</li>
<li>I tested the workflow on the subsystem for Linux since ndjson-map does not seem to work properly on Windows currently.</li>
</ul>

Given a data.tsv file such :

<pre><code>id code name
1 AL Alabama
2 AK Alaska
4 AZ Arizona
5 AR Arkansas
6 CA California
... ... ...
</code></pre>

Given a topojson.json file such : (the structure is correct, the numeral values are random)

<pre><code>{ 
"type":"Topology",
"transform": 
 {
 "scale": [0.0015484881821515486,0.0010301030103010299],
 "translate":[-5.491666666666662,41.008333333333354]
 },
"objects": 
 {
 "states":
 {
 "type":"GeometryCollection",
 "geometries": 
 [
 {"type":"Polygon","arcs":[[0]],"properties":{"code_2":"AL"}},
 {"type":"Polygon","arcs":[[1]],"properties":{"code_2":"AK"}}
 ]
 }
 },
"arcs":
 [
 [[2466,9916],[-25,-5],[3,-13]],
 [[2357,9852],[1,-2],[1,-2]]
 ]
}
</code></pre>

How to use the common fields(1) to inject the values of an other field(2) into the json file ? 

1]: <code>data.txt#code</code> and <code>topojson.txt.objects.states.geometries.properties.code_2</code>

2]: <code>data.txt#name</code>

The end result should contains :

<pre><code> {"type":"Polygon","arcs":[[0]],"properties":{"code_2":"AL", "name":"Alabama" }},
 {"type":"Polygon","arcs":[[1]],"properties":{"code_2":"AK", "name":"Alaska" }},
</code></pre>

<hr>

EDIT: Accepted answer:

<pre><code>topojson -o final.json -e data.tsv --id-property=code_2,code -p code_2,state=name -- topojson.json
</code></pre>

How to add properties to topojson file?

给定data.tsv文件的如下:id  code    name1   AL  Alabama2   AK  Alaska4   AZ  Arizona5   AR  Arkansas6   CA  California... ... ...给出一个topojson.json文件的 : (结构正确，数值是随机的){ "...

问如何在topojson文件中添加属性？
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