Question

我有一个简单的条形图。如何使条形顺序出现？换句话说，应该出现第一个栏。第二个栏应出现（第一个栏保持在该位置）。然后，第三个条应出现（前两个应保持原位）。

说我有这个MWE：

import android.content.Context;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.widget.TextView;
import android.widget.Toast;

public class CurrentLocationActivity extends AppCompatActivity implements LocationListener {
    public static String tvLongi;
    public static String tvLati;
    TextView tvLatitude;
    TextView tvLongitude;
    LocationManager locationManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        CheckPermission();
    }

    /* Request updates at startup */
    @Override
    public void onResume() {
        super.onResume();
        getLocation();
    }

    /* Remove the locationlistener updates when Activity is paused */
    @Override
    protected void onPause() {
        super.onPause();
        locationManager.removeUpdates(this);
    }

    public void getLocation() {
        try {
            locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
            locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 5000, 5, this);
        } catch (SecurityException e) {
            e.printStackTrace();
        }
    }

    public void CheckPermission() {
        if (ContextCompat.checkSelfPermission(getApplicationContext(), android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(getApplicationContext(), android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(this, new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION, android.Manifest.permission.ACCESS_COARSE_LOCATION}, 101);
        }
    }

    @Override
    public void onLocationChanged(Location location) {
        // Getting reference to TextView tv_longitude
        tvLongitude = (TextView) findViewById(R.id.tv_longitude);
        // Getting reference to TextView tv_latitude
        tvLatitude = (TextView) findViewById(R.id.tv_latitude);

        tvLongi = String.valueOf(location.getLongitude());
        tvLati = String.valueOf(location.getLatitude());

        // Setting Current Longitude
        tvLongitude.setText("Longitude:" + tvLongi);
        // Setting Current Latitude
        tvLatitude.setText("Latitude:" + tvLati);
    }


    @Override
    public void onProviderDisabled(String provider) {
        Toast.makeText(CurrentLocationActivity.this, "Please Enable GPS and Internet", Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {

    }

    @Override
    public void onProviderEnabled(String provider) {
        Toast.makeText(this, "Enabled new provider!" + provider,
                Toast.LENGTH_SHORT).show();
    }
}

csv <-“水果，价值苹果，60 橙色，51岁西瓜，50英寸

library(ggplot2)
library(gganimate)

这不起作用。我该怎么办？

Answer 1

您可以添加一列数字，给出其显示顺序：

data$fruit_order = 1:3

ggplot(data, aes(fruit, value)) + 
    geom_bar(stat='identity') +
    transition_reveal(fruit_order)

Answer 2

请运行以下代码以获得所需的输出：

ggplot(data, aes(fruit, value)) + 
    geom_bar(stat='identity') + 
    transition_states(fruit, wrap = FALSE) + 
    shadow_mark(past = TRUE) +
    enter_grow()

希望这会有所帮助。干杯。

如何在gganimate中一次显示一个小节

2 个答案: