从列表中选择特定数量的项目(Select specific number of items from a list)

我有一个格式列表

+---------+------------------+ | Country | GDP | +---------+------------------+ | Austria | 26171.6909118266 | +---------+------------------+ | Belgium | 24512.4131357791 | +---------+------------------+ | Denmark | 32400.0606104087 | +---------+------------------+ | Spain | | +---------+------------------+

从列表中获取数据：

function parseData(d) { var keys = _.keys(d[0]); return _.map(d, function(d) { var o = {}; _.each(keys, function(k) { if( k == 'Country' ) o[k] = d[k]; else o[k] = parseFloat(d[k]); }); return o; }); } var xAxisOptions = ["GDP"] var data = parseData(data); d3.select('#x-axis-menu') .selectAll('li') .data(xAxisOptions) .enter() .append('li') .text(function(d) {return d;}) .classed('selected', function(d) { return d === xAxis; }) .on('click', function(d) { xAxis = d; updateChart(); updateMenus(); });

问题是始终选择整个列表。 我想选择所有GDP直到丹麦，有没有人有任何想法？

I have a list in format

+---------+------------------+ | Country | GDP | +---------+------------------+ | Austria | 26171.6909118266 | +---------+------------------+ | Belgium | 24512.4131357791 | +---------+------------------+ | Denmark | 32400.0606104087 | +---------+------------------+ | Spain | | +---------+------------------+

Get data from list using:

function parseData(d) { var keys = _.keys(d[0]); return _.map(d, function(d) { var o = {}; _.each(keys, function(k) { if( k == 'Country' ) o[k] = d[k]; else o[k] = parseFloat(d[k]); }); return o; }); } var xAxisOptions = ["GDP"] var data = parseData(data); d3.select('#x-axis-menu') .selectAll('li') .data(xAxisOptions) .enter() .append('li') .text(function(d) {return d;}) .classed('selected', function(d) { return d === xAxis; }) .on('click', function(d) { xAxis = d; updateChart(); updateMenus(); });

The problem is that all the time select the whole list. I want to select all GDPs until Denmark, does anyone have any idea?

最满意答案

Lodash有点矫枉过正-_-

function parseData (d) { var i, cp = []; for (i = 0; i < data.length; i++) { if (data[i]["GDP"]) cp.push({ "Country": data[i]["Country"], "GDP": parseFloat(data[i]["GDP"]) }); } return cp; }

Lodash is overkill -_-

function parseData (d) { var i, cp = []; for (i = 0; i < data.length; i++) { if (data[i]["GDP"]) cp.push({ "Country": data[i]["Country"], "GDP": parseFloat(data[i]["GDP"]) }); } return cp; }从列表中选择特定数量的项目(Select specific number of items from a list)

我有一个格式列表

+---------+------------------+ | Country | GDP | +---------+------------------+ | Austria | 26171.6909118266 | +---------+------------------+ | Belgium | 24512.4131357791 | +---------+------------------+ | Denmark | 32400.0606104087 | +---------+------------------+ | Spain | | +---------+------------------+

从列表中获取数据：

function parseData(d) { var keys = _.keys(d[0]); return _.map(d, function(d) { var o = {}; _.each(keys, function(k) { if( k == 'Country' ) o[k] = d[k]; else o[k] = parseFloat(d[k]); }); return o; }); } var xAxisOptions = ["GDP"] var data = parseData(data); d3.select('#x-axis-menu') .selectAll('li') .data(xAxisOptions) .enter() .append('li') .text(function(d) {return d;}) .classed('selected', function(d) { return d === xAxis; }) .on('click', function(d) { xAxis = d; updateChart(); updateMenus(); });

问题是始终选择整个列表。 我想选择所有GDP直到丹麦，有没有人有任何想法？

I have a list in format

+---------+------------------+ | Country | GDP | +---------+------------------+ | Austria | 26171.6909118266 | +---------+------------------+ | Belgium | 24512.4131357791 | +---------+------------------+ | Denmark | 32400.0606104087 | +---------+------------------+ | Spain | | +---------+------------------+

Get data from list using:

function parseData(d) { var keys = _.keys(d[0]); return _.map(d, function(d) { var o = {}; _.each(keys, function(k) { if( k == 'Country' ) o[k] = d[k]; else o[k] = parseFloat(d[k]); }); return o; }); } var xAxisOptions = ["GDP"] var data = parseData(data); d3.select('#x-axis-menu') .selectAll('li') .data(xAxisOptions) .enter() .append('li') .text(function(d) {return d;}) .classed('selected', function(d) { return d === xAxis; }) .on('click', function(d) { xAxis = d; updateChart(); updateMenus(); });

The problem is that all the time select the whole list. I want to select all GDPs until Denmark, does anyone have any idea?

最满意答案

Lodash有点矫枉过正-_-

function parseData (d) { var i, cp = []; for (i = 0; i < data.length; i++) { if (data[i]["GDP"]) cp.push({ "Country": data[i]["Country"], "GDP": parseFloat(data[i]["GDP"]) }); } return cp; }

Lodash is overkill -_-

function parseData (d) { var i, cp = []; for (i = 0; i < data.length; i++) { if (data[i]["GDP"]) cp.push({ "Country": data[i]["Country"], "GDP": parseFloat(data[i]["GDP"]) }); } return cp; }