在R中向散点图添加abline时出错

Question

散点图

abundance = data.frame(lncount = c(13, 865, 1800), lnedna = c(4.72, 5.05,   5.22,   5.24,
                                                         5.36,  5.71,   5.63,   5.97,
                                                         6.08,  6.20,   6.43,   6.54))
xyplot(lnedna ~ lncount, data = abundance, 
   xlab = "Mussel Count by Snorkel Survey",
   ylab = "eDNA concentraion (gene sequence/Liter) on log scale", 
   main = "Mussel Abundance")

添加拟合线

abline(lm(lnedna ~ lncount))

这是我在尝试添加回归线时遇到的错误：eval中的错误（expr，envir，enclos）：找不到对象'lnedna'

lnedna在制作散点图时效果很好，为什么不添加回归线呢？

Answer 1

您似乎需要在abline电话中添加xyplot：

lattice::xyplot(lnedna ~ lncount, data = abundance, 
                panel = function(x, y) {
                  lattice::panel.xyplot(x, y)
                  lattice::panel.abline(lm(y ~ x))
                },
                xlab = "Mussel Count by Snorkel Survey",
                ylab = "eDNA concentraion (gene sequence/Liter) on log scale", 
                main = "Mussel Abundance")

从这个问题：How to add abline with lattice xyplot function?

Answer 2

我无法使用 if(ContextCompat.checkSelfPermission(this,Manifest.permission.ACCESS_FINE_LOCATION)!= PackageManager.PERMISSION_GRANTED){ ActivityCompat.requestPermissions(LoginActivity.this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 1600); } 重新生成您的答案。感谢@Override public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[],@NonNull int[] grantResults) { if(requestCode==REQUESTID){ // If request is cancelled, the result arrays are empty. if (!(grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED)) { // permission was not granted, boo! //show the permission rationale if the user did not click never show again if(ActivityCompat.shouldShowRequestPermissionRationale(LoginActivity.this,android.Manifest.permission.ACCESS_FINE_LOCATION)){ //means user did not choose to never show permissions again. show the alert dialog //Show a message explaining why the permission is necessary //This explanation will only be shown if the user hasn't clicked do not show again on the permission dialog } } } } 格子答案。感谢他那个。

<强> GGPLOT2

                try {

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                } catch (SecurityException se) {
                    Toast.makeText(this, "Please provide location permissions to continue", Toast.LENGTH_SHORT).show();
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格子（来自下面的hrabel）

plot()